color("green")
for i in range(3):
go (100)
turn(360/3)

turn(-90)
pen_up()
go(100)
pen_down()
color("navy")
for i in range(4):
go (100)
turn(360/4)

turn(-180)
pen_up()
go(300)
turn(-90)
color("yellow")
for i in range(6):
go(100)
turn(360/6)
invisible()