pendown()
backward(100)


def shape():
    pensize(5)
    pendown()
    color("red")
    forward(50)
    left(120)
    color("blue")
    forward(50)
    left(120)
    color("green")
    forward(50)
    left(120)
    penup()
    forward(50)
for i in range(4):
    shape()