Array
(
    [A1] => Volkan
    [A2] => Hakan
    [A3] => Onur
    [A4] => Murat
    [A5] => Levent
)

Array
(
    [B1] => Aslı
    [A1] => Banu
    [A4] => Derya
)

Array
(
    [A1] => Banu
    [A2] => Hakan
    [A3] => Onur
    [A4] => Derya
    [A5] => Levent
    [B1] => Aslı
)