1
Array
(
    [0] => aa
)

1
Array
(
    [0] => dv
)

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

)

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

)