Rectangles: (10 entries)
  0: Rectangle: x1=0, y1=0, x2=0, y2=0
  1: Rectangle: x1=279, y1=361, x2=375, y2=457
  2: Rectangle: x1=368, y1=464, x2=483, y2=579
  3: Rectangle: x1=453, y1=571, x2=596, y2=714
  4: Rectangle: x1=509, y1=650, x2=670, y2=811
  5: Rectangle: x1=0, y1=0, x2=0, y2=0
  6: Rectangle: x1=279, y1=171, x2=375, y2=267
  7: Rectangle: x1=368, y1=222, x2=483, y2=337
  8: Rectangle: x1=453, y1=273, x2=596, y2=416
  9: Rectangle: x1=509, y1=314, x2=670, y2=475