Rectangles: (5 entries)
  0: Rectangle: x1=0, y1=0, x2=0, y2=0
  1: Rectangle: x1=317, y1=644, x2=345, y2=657
  2: Rectangle: x1=415, y1=830, x2=443, y2=843
  3: Rectangle: x1=511, y1=1021, x2=543, y2=1033
  4: Rectangle: x1=577, y1=1157, x2=613, y2=1172