import turtle as t

while n < 4:

    t.forward(5)

    t.right(90)

    n = n + 1

import turtle as t

n = 1

while n < 4:

    t.forward(5)

    t.right(90)

n = n + 1

import turtle as t

n = 0

while n < 4:

    t.forward(5)

    t.right(90)

    n = n + 1

import turtle as t

n = 1

while n < 4:

    t.forward(5)

    t.right(90)

    n = n + 1