Rectangles: (4 entries)
  0: Rectangle: x1=43, y1=0, x2=215, y2=51
  1: Rectangle: x1=43, y1=51, x2=215, y2=97
  2: Rectangle: x1=43, y1=97, x2=215, y2=143
  3: Rectangle: x1=43, y1=143, x2=215, y2=189