procedure 0
  move
  repeat 4 times
    pen colour = random
    dot 1
    forward 3
    right 90
    forward 1
    dot 1
    left 90
    forward 2
    right 90
    forward 2
    dot 1
    left 90
    forward 1
    right 90
    forward 3
#display: x=-219, y=-5, grid=30

