# ordered contour from manual segmentation
#  x    y
  20   67
  21   67
  22   67
  23   67
  24   67
  24   68
  25   69
  26   70
  27   71
  28   72
  28   73
  29   74
  30   75
  30   76
  30   77
  30   78
  30   79
  29   80
  28   81
  27   82
  26   82
  25   82
  24   83
  23   83
  22   83
  21   82
  20   82
  19   82
  18   81
  17   81
  16   80
  15   79
  15   78
  15   77
  15   76
  15   75
  15   74
  15   73
  15   72
  15   71
  15   70
  16   69
  17   68
  18   68
  19   68
