f

import turtle z=turtle.Turtle() z.shape("arrow") z.speed(0) z.pensize(5) z.fillcolor("blue") z.pencolor("green") z.forward(100) z.right(90) z.forward(50) z.left(90) z.forward(50) z.left(90) z.forward(100) z.right(90) z.forward(50) z.left(90) z.forward(50) z.left(90) z.forward(100) z.right(90) z.forward(50) z.left(90) z.forward(50) z.left(90) z.forward(100) z.right(90) z.forward(50) z.left(90) z.forward(50)