Rectangles: (5 entries)
  0: Rectangle: x1=0, y1=0, x2=0, y2=0
  1: Rectangle: x1=17, y1=558, x2=41, y2=565
  2: Rectangle: x1=26, y1=718, x2=50, y2=725
  3: Rectangle: x1=30, y1=882, x2=62, y2=892
  4: Rectangle: x1=34, y1=1001, x2=66, y2=1011