?????? A ?-?????? ???? ??????? ????, ?? ?? combined ?????? ??? ?????? ????? ?????? ?????? ??????. ???? ????? ?-???? ?? ???????? ???, ????? ???????? ???? ????? ?? ??????? ??? ???. ?????? A ???? ??????? ?? ??????, ??????, ??????? ?????? (B3) ??? ???? ?????? ?? ??????, ?-??????} ??? ?-????? ????. ?????? B3 ?????/??????/????? ????????? ????