Rectangles: (5 entries)
  0: Rectangle: x1=0, y1=0, x2=0, y2=0
  1: Rectangle: x1=13, y1=578, x2=38, y2=602
  2: Rectangle: x1=14, y1=742, x2=47, y2=775
  3: Rectangle: x1=21, y1=913, x2=61, y2=953
  4: Rectangle: x1=22, y1=1036, x2=68, y2=1082