??? ?? ????? ?????? ??? ????? ????? ???? ?????? ??? ???? ?? ??? ??? ?? ??? ?? ?????? ?????/????? ????? ??/???? ?? ????? ????. ???? ????? ???? ????? ?? ????? ????? ?????/??????? ???????? ? ?? ????? ???? ???. ??? A ??? B ??? Z ??????? ??????: ?????? ????? ????? ???? ??? ?? ????? ?????? ????? ???? ???????? ??? ?????? ???? ????????? ?? ??? ?????