return 
[ [ [ 2, 3, 4, 5 ], [ 1, 6, 19, 8 ], [ 1, 8, 9, 10 ], [ 1, 10, 20, 12 ], 
      [ 1, 12, 13, 6 ], [ 2, 5, 14, 7 ], [ 19, 19, 6, 15 ], [ 2, 19, 15, 3 ], 
      [ 3, 15, 16, 17 ], [ 3, 17, 11, 4 ], [ 20, 20, 10, 18 ], 
      [ 4, 20, 18, 5 ], [ 5, 18, 21, 14 ], [ 6, 13, 16, 15 ], [ 7, 14, 9, 8 ],
      [ 21, 21, 9, 14 ], [ 9, 21, 18, 10 ], [ 11, 17, 13, 12 ], 
      [ 7, 7, 8, 2 ], [ 11, 11, 12, 4 ], [ 16, 16, 13, 17 ] ], 
  [ [ 2, 3, 4, 5 ], [ 18, 18, 1, 6 ], [ 1, 18, 8, 9 ], [ 1, 9, 19, 11 ], 
      [ 1, 11, 12, 6 ], [ 2, 5, 20, 7 ], [ 18, 6, 13, 8 ], [ 3, 7, 14, 15 ], 
      [ 3, 15, 21, 4 ], [ 21, 21, 15, 19 ], [ 4, 16, 17, 5 ], 
      [ 20, 20, 5, 17 ], [ 7, 20, 17, 14 ], [ 8, 13, 17, 16 ], 
      [ 8, 16, 10, 9 ], [ 19, 15, 14, 11 ], [ 11, 14, 13, 12 ], 
      [ 2, 2, 7, 3 ], [ 21, 10, 16, 4 ], [ 12, 12, 13, 6 ], [ 10, 10, 19, 9 ] 
     ], 
  [ [ 2, 3, 4, 5 ], [ 19, 19, 1, 6 ], [ 1, 19, 8, 9 ], [ 1, 9, 10, 11 ], 
      [ 1, 11, 12, 6 ], [ 2, 5, 20, 7 ], [ 19, 6, 13, 8 ], [ 3, 7, 14, 15 ], 
      [ 3, 15, 21, 4 ], [ 4, 21, 17, 11 ], [ 4, 10, 18, 5 ], 
      [ 20, 20, 5, 18 ], [ 7, 20, 18, 14 ], [ 8, 13, 17, 15 ], 
      [ 8, 14, 16, 9 ], [ 21, 21, 15, 17 ], [ 10, 16, 14, 18 ], 
      [ 11, 17, 13, 12 ], [ 2, 2, 7, 3 ], [ 12, 12, 13, 6 ], 
      [ 16, 16, 10, 9 ] ], 
  [ [ 2, 3, 4, 5 ], [ 19, 19, 1, 6 ], [ 1, 19, 8, 9 ], [ 1, 9, 10, 11 ], 
      [ 1, 11, 12, 6 ], [ 2, 5, 21, 7 ], [ 19, 6, 13, 8 ], [ 3, 7, 14, 15 ], 
      [ 3, 15, 16, 4 ], [ 20, 20, 4, 16 ], [ 4, 20, 18, 5 ], 
      [ 21, 21, 5, 18 ], [ 7, 21, 18, 14 ], [ 8, 13, 17, 15 ], 
      [ 8, 14, 16, 9 ], [ 9, 15, 17, 10 ], [ 20, 16, 14, 18 ], 
      [ 11, 17, 13, 12 ], [ 2, 2, 7, 3 ], [ 10, 10, 17, 11 ], 
      [ 12, 12, 13, 6 ] ], 
  [ [ 2, 3, 4, 5 ], [ 19, 19, 1, 20 ], [ 1, 19, 7, 8 ], [ 1, 8, 9, 10 ], 
      [ 20, 20, 1, 10 ], [ 19, 20, 10, 7 ], [ 3, 6, 11, 12 ], 
      [ 3, 12, 13, 4 ], [ 4, 13, 14, 11 ], [ 4, 11, 6, 5 ], [ 7, 10, 9, 15 ], 
      [ 7, 15, 16, 8 ], [ 8, 16, 21, 9 ], [ 9, 21, 18, 15 ], 
      [ 11, 14, 18, 12 ], [ 12, 18, 17, 13 ], [ 21, 21, 16, 18 ], 
      [ 14, 17, 16, 15 ], [ 2, 2, 6, 3 ], [ 5, 5, 6, 2 ], [ 17, 17, 14, 13 ] ]
    , [ [ 19, 19, 4, 5 ], [ 19, 5, 6, 7 ], [ 19, 7, 8, 4 ], [ 1, 3, 9, 10 ], 
      [ 1, 10, 11, 2 ], [ 2, 11, 12, 13 ], [ 2, 13, 14, 3 ], [ 3, 14, 21, 9 ],
      [ 4, 8, 21, 16 ], [ 4, 16, 17, 5 ], [ 5, 17, 12, 6 ], [ 20, 20, 6, 11 ],
      [ 6, 20, 18, 7 ], [ 7, 18, 15, 8 ], [ 21, 21, 14, 16 ], 
      [ 9, 15, 18, 10 ], [ 10, 18, 20, 11 ], [ 13, 17, 16, 14 ], 
      [ 1, 1, 2, 3 ], [ 12, 12, 17, 13 ], [ 15, 15, 9, 8 ] ], 
  [ [ 19, 19, 4, 5 ], [ 19, 5, 6, 7 ], [ 19, 7, 8, 4 ], [ 1, 3, 9, 10 ], 
      [ 1, 10, 11, 2 ], [ 2, 11, 12, 13 ], [ 2, 13, 20, 3 ], [ 3, 20, 15, 9 ],
      [ 4, 8, 15, 16 ], [ 4, 16, 21, 5 ], [ 5, 21, 12, 6 ], [ 6, 11, 17, 18 ],
      [ 6, 18, 14, 7 ], [ 20, 20, 13, 15 ], [ 8, 14, 18, 9 ], 
      [ 9, 18, 17, 10 ], [ 21, 21, 16, 12 ], [ 12, 16, 15, 13 ], 
      [ 1, 1, 2, 3 ], [ 14, 14, 8, 7 ], [ 17, 17, 11, 10 ] ], 
  [ [ 21, 21, 3, 4 ], [ 21, 21, 4, 3 ], [ 1, 2, 5, 6 ], [ 2, 1, 6, 5 ], 
      [ 3, 4, 7, 8 ], [ 4, 3, 8, 7 ], [ 5, 6, 9, 10 ], [ 6, 5, 10, 9 ], 
      [ 7, 8, 11, 12 ], [ 8, 7, 12, 11 ], [ 9, 10, 13, 14 ], 
      [ 10, 9, 14, 13 ], [ 11, 12, 15, 16 ], [ 12, 11, 16, 15 ], 
      [ 13, 14, 17, 18 ], [ 14, 13, 18, 17 ], [ 15, 16, 19, 20 ], 
      [ 16, 15, 20, 19 ], [ 17, 18, 20, 20 ], [ 18, 17, 19, 19 ], 
      [ 1, 1, 2, 2 ] ] ];
