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