while not wall_is_on_the_left():
    move_left()

if not wall_is_above():
    while not wall_is_above():
        move_up()

    return None

while not wall_is_on_the_right():
    move_right()

if not wall_is_above():
    while not wall_is_above():
        move_up()

    while not wall_is_on_the_left():
        move_left()

    return None