Rectangles: (5 entries)
  0: Rectangle: x1=0, y1=0, x2=0, y2=0
  1: Rectangle: x1=406, y1=396, x2=478, y2=468
  2: Rectangle: x1=527, y1=502, x2=624, y2=604
  3: Rectangle: x1=647, y1=618, x2=769, y2=743
  4: Rectangle: x1=729, y1=703, x2=866, y2=846