Array
(
    [0] => Array
        (
            [0] => 2
            [1] => 4
        )

    [1] => Array
        (
            [0] => 3
            [1] => 3
        )

    [2] => Array
        (
            [0] => 5
            [1] => 1
        )

    [3] => Array
        (
            [0] => 1
            [1] => 5
        )

    [4] => Array
        (
            [0] => 5
            [1] => 1
        )

)