# -*- coding: utf-8 -*-
import random as rd
import turtle as tt
win = tt.Screen()
######
tt.setup(0.85, 0.85)
tt.shape("turtle")
tt.speed(0)

color = ['green','red','black','blue']
sidelength = 20
for i in color:
    tt.pencolor(i)
    for j in range(0,360,10):
        for k in range(4):
            tt.fd(sidelength)
            tt.lt(90)
        tt.seth(j)
    sidelength += 20

######
win.exitonclick()