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
        )

)