Rectangles: (5 entries)
  0: Rectangle: x1=0, y1=0, x2=0, y2=0
  1: Rectangle: x1=548, y1=576, x2=612, y2=640
  2: Rectangle: x1=708, y1=733, x2=798, y2=829
  3: Rectangle: x1=872, y1=902, x2=983, y2=1021
  4: Rectangle: x1=980, y1=1026, x2=1105, y2=1156