start

start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start start

best

best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best best