(repaint rects
  (rect -100 -100 18 18)
  (rect 0 0 18 18)
  (rect 0 0 18 18)
  (rect 18 0 19 18)
  (rect 18 0 19 18)
  (rect 37 0 18 18)
  (rect 37 0 18 18)
  (rect -9 18 18 19)
  (rect -9 18 18 19)
  (rect 9 18 18 19)
  (rect 9 18 18 19)
  (rect 28 18 18 19)
  (rect 28 18 18 19)
  (rect 46 18 18 19)
  (rect 46 18 18 19)
  (rect 0 37 18 18)
  (rect 0 37 18 18)
  (rect 18 37 19 18)
  (rect 18 37 19 18)
  (rect 37 37 18 18)
  (rect 37 37 18 18)
  (rect -100 -100 18 18)
)