Rectangles: (5 entries)
  0: Rectangle: x1=0, y1=0, x2=0, y2=0
  1: Rectangle: x1=309, y1=459, x2=346, y2=469
  2: Rectangle: x1=402, y1=589, x2=449, y2=603
  3: Rectangle: x1=495, y1=726, x2=553, y2=742
  4: Rectangle: x1=556, y1=824, x2=624, y2=844