from turtle import *

def square(side_length):
    side_lengths = (side_length, side_length, side_length, side_length)
    for side_lengths in side_lengths:
        forward(side_length)
        right(90)

  

sizes = [20, 40, 60, 80, 100]
for size in sizes:
    square(20)
    penup()
    forward(40)
    pendown()

input()