---

if wall_from_down():
    move_up()
    fill_cell()
    move_up()
    move_left()
    fill_cell()
    for i in range(2):
        move_right()
        fill_cell()
    move_up()
    move_right()
    fill_cell()
    for i in range(4):
        move_left()
        fill_cell()
    move_up()
    move_left()
    fill_cell()
    for i in range(6):
        move_right()
        fill_cell()
    move_up()
    move_left()
    fill_cell()
    for i in range(4):
        move_left()
        fill_cell()
    move_up()
    move_right()
    fill_cell()
    for i in range(2):
        move_right()
        fill_cell()
    move_up()
    move_left()
    fill_cell()
else:
    for i in range(3):
        move_down()
    if wall_from_down():
        for i in range(4):
            move_up()
        fill_cell()
        move_up()
        fill_cell()
        move_left()
        fill_cell()
        move_up()
        move_right()
        fill_cell()
        move_right()
        move_down()
        fill_cell()
    else:
        for i in range(4):
            move_up()
        fill_cell()