Array
(
    [0] => Jacek
    [1] => Placek
)
Array
(
    [0] => Jacek
    [1] => Placek
    [2] => Marek
)
Array
(
    [0] => Jacek
    [2] => Marek
)
Array
(
    [0] => Jacek
    [2] => Marek
    [3] => Jola
)
Array
(
    [0] => Jacek
    [2] => Marek
    [3] => Jola
    [ziutek] => Donek
)