8<br>2<br>7<br><pre>Array
(
    [0] => Array
        (
            [0] => 8
            [1] => 2
        )

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

    [2] => Array
        (
            [0] => 1
            [1] => 7
        )

)
</pre>