<plaintext>Array
(
    [0] => Array
        (
            [0] => 5
            [1] => 7
            [2] => 9
            [3] => 2
            [4] => 16
            [5] => 58
        )

    [1] => Array
        (
            [0] => 2
            [1] => 4
            [2] => 6
            [3] => 8
            [4] => 37
            [5] => 92
        )

    [2] => Array
        (
            [0] => 2
            [1] => 4
            [2] => 5
            [3] => 17
            [4] => 80
        )

)
Array
(
    [1] => 7
    [2] => 9
    [4] => 16
    [5] => 58
)