Rectangles: (5 entries)
  0: Rectangle: x1=0, y1=0, x2=0, y2=0
  1: Rectangle: x1=11, y1=11, x2=61, y2=26
  2: Rectangle: x1=14, y1=14, x2=64, y2=29
  3: Rectangle: x1=23, y1=23, x2=73, y2=38
  4: Rectangle: x1=29, y1=29, x2=79, y2=44