from turtle import *

def square():
    forward(100)
    right(90)
    forward(100)
    right(90)
    forward(100)
    right(90)
    forward(100)
    right(90)

square()
penup()
forward(120)
pendown()
square()
penup()
forward(120)
pendown()
square()
penup()
forward(120)
pendown()
square()