?????? ???????? ????? ???????? ???? ??????? ???? ???????????? ?????????? ????? ???????? ?????? ???? ??????? ??? ??????? ??? ????????? ?? ????????????????. ???? ????? ?? ??? ?????? ?????? ???? ????????? ??????? ??? ????? ????? ??? ??????????????? ??? ????? ??? ?? ????? ?? ?? ???? ??? ??? ???? ???? ???? ???????. ??? ??? ???, ??? ???? ??? b