return [ [ 8, 8, 7, 3 ], [ 7, 5, 10, 3 ], [ 1, 2, 9, 4 ], [ 8, 3, 9, 5 ], 
  [ 7, 4, 6, 2 ], [ 10, 10, 5, 9 ], [ 1, 8, 5, 2 ], [ 1, 1, 4, 7 ], 
  [ 10, 6, 4, 3 ], [ 6, 6, 9, 2 ] ];
