Array
(
    [0] => Array
        (
            [0] => col111
            [1] =>  col112
            [2] =>  col113
            [3] =>  col114
        )

    [1] => Array
        (
            [0] => col211
            [1] =>  col212
            [2] =>  col213
            [3] =>  col214
        )

)
Array
(
    [0] => Array
        (
            [0] => col121
            [1] =>  col122
            [2] =>  col123
            [3] =>  col124
        )

    [1] => Array
        (
            [0] => col221
            [1] =>  col222
            [2] =>  col223
            [3] =>  col224
        )

)
Array
(
    [0] => Array
        (
            [0] => col131
            [1] =>  col132
            [2] =>  col133
            [3] =>  col134
        )

    [1] => Array
        (
            [0] => col231
            [1] =>  col232
            [2] =>  col233
            [3] =>  col234
        )

)