def task_8_21():
    while True:
        while wall_is_on_the_left() and wall_is_above():
            for i in range(9):
                move_right()
                move_down()
        while wall_is_on_the_right() and wall_is_above():
            for i in range(9):
                move_left()
                move_down()
        else:
            if wall_is_on_the_left() and wall_is_beneath():
                for i in range(9):
                    move_up()
                    move_right()
            if wall_is_on_the_right() and wall_is_beneath():
                for i in range(9):
                    move_up()
                    move_left()
        break


if __name__ == '__main__':
    run_tasks()