???? ????? ??????? ?? ???? ????? ????????? ? ?? ??? ???????? ??? ????? ????? ??????? ??? ???. ???? ???? ?? ????? ???????? ???????? ?? ??? ??????? ???? ????? ?????? ????? ? ?????? ????? ???????. ???? Y ???? B ???? D ?????? ????? ????? ??????? ??????? ??? ????? ?????? ?????? ????? ?????? ???????

??? ??? ???? ?? ?????/????? ?????/????? ???? ???? ????? ????? ?? ????????/????? ??????/???/????/?????? ???????? ??? ????? ???????????? ???? ?????? ???????/??????/??????. ?? ????? ????? ??????????/???????? ???????? ??? ????????/??? ????? ?? ??????? ???/???????/?????? ????? ?????? ????? ?? ??????/??