int(7)
00 00 00 10 09 09 09
00 10 10 10 09 09 09
00 08 08 06 04 12 04
14 14 13 15 04 04 04
01 02 02 02 03 03 03
01 02 02 02 02 05 05
07 07 11 02 02 05 05
float(0.00033187866210938)
Array
(
    [0] => Array
        (
            [0] => 1
            [1] => 7
        )

    [1] => Array
        (
            [0] => 6
            [1] => 15
        )

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

    [3] => Array
        (
            [0] => 8
            [1] => 14
        )

    [4] => Array
        (
            [0] => 13
            [1] => 15
        )

    [5] => Array
        (
            [0] => 14
            [1] => 1
        )

    [6] => Array
        (
            [0] => 15
            [1] => 6
        )

)