[ [ 1, 2, 3, 8, 9, 10, 13, 48, 49, 50 ], 
  [ 2, 4, 5, 6, 8, 9, 10, 11, 12, 13, 14, 17, 19, 20, 23, 26, 31, 32, 33, 38, 39, 41, 42, 43, 45 ] ]