Rectangles: (5 entries)
  0: Rectangle: x1=0, y1=0, x2=0, y2=0
  1: Rectangle: x1=321, y1=300, x2=337, y2=302
  2: Rectangle: x1=418, y1=381, x2=436, y2=384
  3: Rectangle: x1=515, y1=468, x2=538, y2=472
  4: Rectangle: x1=579, y1=532, x2=605, y2=537