import turtle
turtle.forward(100)
turtle.right(90)
turtle.forward(100)
turtle.right(90)
turtle.forward(100)
turtle.right(90)
turtle.forward(80)
turtle.right(90)
turtle.forward(80)
turtle.right(90)
turtle.forward(60)
turtle.right(90)
turtle.forward(60)
turtle.right(90)
turtle.forward(40)
turtle.right(90)
turtle.forward(40)
turtle.right(90)
turtle.forward(20)
turtle.right(90)
turtle.forward(20)
turtle.right(90)
turtle.forward(10)
turtle.right(90)
turtle.forward(10)