Array ( [0] => Array ( [0] => 5 [1] => 1 [2] => 9 [3] => 11 ) [1] => Array ( [0] => 2 [1] => 4 [2] => 8 [3] => 10 ) [2] => Array ( [0] => 13 [1] => 3 [2] => 6 [3] => 7 ) [3] => Array ( [0] => 15 [1] => 14 [2] => 12 [3] => 16 ) )
Array ( [0] => Array ( [0] => 15 [1] => 13 [2] => 2 [3] => 5 ) [1] => Array ( [0] => 14 [1] => 3 [2] => 4 [3] => 1 ) [2] => Array ( [0] => 12 [1] => 6 [2] => 8 [3] => 9 ) [3] => Array ( [0] => 16 [1] => 7 [2] => 10 [3] => 11 ) )