return 
[ [ [ 2, 2, 3, 4 ], [ 1, 1, 4, 3 ], [ 1, 2, 5, 6 ], [ 2, 1, 6, 5 ], 
      [ 3, 4, 7, 8 ], [ 4, 3, 8, 7 ], [ 5, 6, 8, 8 ], [ 6, 5, 7, 7 ] ], 
  [ [ 7, 7, 3, 4 ], [ 7, 5, 6, 3 ], [ 1, 2, 8, 4 ], [ 1, 3, 8, 5 ], 
      [ 7, 4, 6, 2 ], [ 8, 8, 2, 5 ], [ 1, 1, 5, 2 ], [ 6, 6, 4, 3 ] ], 
  [ [ 7, 7, 3, 4 ], [ 7, 5, 6, 3 ], [ 8, 8, 1, 2 ], [ 1, 8, 6, 5 ], 
      [ 7, 4, 6, 2 ], [ 2, 5, 4, 8 ], [ 1, 1, 5, 2 ], [ 3, 3, 6, 4 ] ], 
  [ [ 7, 7, 3, 4 ], [ 7, 5, 8, 3 ], [ 1, 2, 8, 4 ], [ 1, 3, 6, 5 ], 
      [ 7, 4, 6, 2 ], [ 8, 8, 5, 4 ], [ 1, 1, 5, 2 ], [ 6, 6, 3, 2 ] ], 
  [ [ 8, 8, 7, 6 ], [ 4, 5, 3, 3 ], [ 2, 2, 6, 4 ], [ 7, 5, 2, 3 ], 
      [ 8, 6, 2, 4 ], [ 1, 7, 3, 5 ], [ 1, 8, 4, 6 ], [ 1, 1, 5, 7 ] ] ];
