Rectangles: (5 entries)
  0: Rectangle: x1=0, y1=0, x2=0, y2=0
  1: Rectangle: x1=275, y1=300, x2=291, y2=302
  2: Rectangle: x1=359, y1=381, x2=377, y2=384
  3: Rectangle: x1=442, y1=468, x2=465, y2=472
  4: Rectangle: x1=497, y1=532, x2=523, y2=537