???? ???? ?? ????? ??? ??? ????????? ????? ????? ???? ????? ?? ???? ???? ???? ???? ??????? ?? ????? ?????? ??? ?? ???????? ????????? ???? ?? ???? ???? ?? ????? {????? ??{????? ????????? ???? ?? ??? ??? ?? ????? ???? ????? ?????? ???? ????? ??????? ???? ???? ?????? ?????? ?? ??????? ??? ?? {????{??????????? ??? ????? ???? ?? ????? ??? ??? ??? ???