?????? ????? ??? ????? ???? ?????? ????? ??? ????? ??? ????? ????????. ????? ???? ?????? ???? ??? ????? ???? ????????? ?B12 ???? ?????? ???????. ????? ???? ????? ????? ? ???? ???? ???? ?????? ????? ?????. ????? ?????? ???????? ???????? ?? ??? ????? ????? ??| ?? ???? ??? ???? ???? ?????? ??? ????? ????? ????? ???? ????? ?? ???? ??????? ??