Rectangles: (5 entries)
  0: Rectangle: x1=0, y1=0, x2=0, y2=0
  1: Rectangle: x1=90, y1=97, x2=110, y2=117
  2: Rectangle: x1=120, y1=120, x2=140, y2=140
  3: Rectangle: x1=150, y1=150, x2=170, y2=170
  4: Rectangle: x1=170, y1=170, x2=190, y2=190