Array
(
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        (
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            [1] => 3
            [2] => 4
        )

    [1] => Array
        (
            [0] => 10
            [1] => 3
            [2] => 4
        )

    [2] => Array
        (
            [0] => 10
            [1] => 3
            [2] => 4
        )

)

Array
(
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        (
            [0] => 10
            [1] => 15
            [2] => 4
        )

    [1] => Array
        (
            [0] => 10
            [1] => 15
            [2] => 4
        )

    [2] => Array
        (
            [0] => 10
            [1] => 15
            [2] => 4
        )

)

Array
(
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        (
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            [1] => 15
            [2] => 20
        )

    [1] => Array
        (
            [0] => 10
            [1] => 15
            [2] => 20
        )

    [2] => Array
        (
            [0] => 10
            [1] => 15
            [2] => 20
        )

)