?????? ??? ??????? ???? ????? ????? ?????? ?????? ?????. ????? ?-??? {????|????|???], ???? ??????? ???? ?????. ???? ?? ??? ????? ?????? B7 ???? ?? ????? ????? ??? , ????? ???? ?????. ???????????: ?????? ??? ???? ????? ????'????? ???? ????? ??? ????? ??? ????? ?????? ?????? ????? ???? ???. ???? ???? ????? ??????? ????? ?????, ??? ?? {???{ ?