Rectangles: (5 entries)
  0: Rectangle: x1=0, y1=0, x2=0, y2=0
  1: Rectangle: x1=232, y1=501, x2=254, y2=529
  2: Rectangle: x1=306, y1=658, x2=326, y2=690
  3: Rectangle: x1=377, y1=807, x2=401, y2=848
  4: Rectangle: x1=430, y1=916, x2=456, y2=961