???? ???? ?????? ????? ??? ???? ?????? ???????? ? S N 168 ??? ????? ??? ?????? ! ????? ??? ???????? ???? ????????, ????? ????????? ?????? ???? ??????????? ?????? ?????????? ??????????? ?????? ???????? ???????????????? ??? ?????? S N 168. ???????? : ????! ?????? ???? ??? ??????? ?????! ??????????????? ??? SN168, ?????? ??????????