Number of candidate bus routes = 42
   5  8  7
   0 13  5
   3 12  5
   5 16  4
   0 26  3
   3 24  3
   5 24  3
  13 16  3
   0 37  2
   0 39  2
   0 45  2
   0 51  2
   0 52  2
   0 53  2
   3 34  2
   3 36  2
   3 42  2
   3 48  2
   3 49  2
   3 50  2
   5 32  2
   5 34  2
   5 40  2
   5 46  2
   5 47  2
   5 48  2
  13 24  2
  13 26  2
  13 32  2
  13 38  2
  13 39  2
  13 40  2
  15 24  2
  15 30  2
  15 36  2
  15 37  2
  15 38  2
  21 24  2
  21 30  2
  21 31  2
  21 32  2
  26 27  2