return 
[ [ [ 2, 3, 4, 5 ], [ 1, 5, 6, 3 ], [ 1, 2, 6, 4 ], [ 1, 3, 6, 5 ], [ 1, 4, 
          6, 2 ], [ 2, 5, 4, 3 ] ], 
  [ [ 2, 3, 4, 5 ], [ 1, 6, 7, 8 ], [ 1, 8, 9, 4 ], [ 1, 3, 9, 5 ], 
      [ 1, 4, 9, 6 ], [ 2, 5, 10, 7 ], [ 2, 6, 10, 8 ], [ 2, 7, 10, 3 ], 
      [ 3, 10, 5, 4 ], [ 6, 9, 8, 7 ] ], 
  [ [ 2, 3, 4, 5 ], [ 1, 5, 6, 7 ], [ 1, 7, 8, 9 ], [ 1, 9, 10, 11 ], 
      [ 1, 11, 6, 2 ], [ 2, 5, 12, 7 ], [ 2, 6, 12, 3 ], [ 3, 12, 10, 9 ], 
      [ 3, 8, 10, 4 ], [ 4, 9, 8, 11 ], [ 4, 10, 12, 5 ], [ 6, 11, 8, 7 ] ], 
  [ [ 2, 3, 4, 5 ], [ 1, 6, 7, 8 ], [ 1, 8, 9, 10 ], [ 1, 10, 11, 5 ], 
      [ 1, 4, 11, 6 ], [ 2, 5, 11, 12 ], [ 2, 12, 9, 8 ], [ 2, 7, 9, 3 ], 
      [ 3, 8, 7, 12 ], [ 3, 12, 11, 4 ], [ 4, 10, 6, 5 ], [ 6, 10, 9, 7 ] ], 
  [ [ 2, 3, 4, 5 ], [ 1, 6, 7, 8 ], [ 1, 8, 9, 4 ], [ 1, 3, 10, 5 ], 
      [ 1, 4, 11, 6 ], [ 2, 5, 11, 12 ], [ 2, 12, 13, 14 ], [ 2, 14, 9, 3 ], 
      [ 3, 8, 14, 10 ], [ 4, 9, 13, 11 ], [ 5, 10, 12, 6 ], [ 6, 11, 13, 7 ], 
      [ 7, 12, 10, 14 ], [ 7, 13, 9, 8 ] ], 
  [ [ 2, 3, 4, 5 ], [ 1, 6, 7, 8 ], [ 1, 8, 9, 4 ], [ 1, 3, 10, 5 ], 
      [ 1, 4, 11, 6 ], [ 2, 5, 11, 12 ], [ 2, 12, 13, 8 ], [ 2, 7, 13, 3 ], 
      [ 3, 13, 14, 10 ], [ 4, 9, 14, 11 ], [ 5, 10, 12, 6 ], [ 6, 11, 14, 7 ],
      [ 7, 14, 9, 8 ], [ 9, 13, 12, 10 ] ] ];
