???? ??? ?????? ?????? ???? ???? ?? ?????? ?????. ??????? ?? ???? ???? ?? ???? ????? ????? . ????? ??? ???? ??????. ????? ; ??? ??? }. ???? ?????? ?-??? ???? ?????? - ?????? ????? ???? ???????????? ???? {???? ?????????? ????? ?????? ?-{????????? ???? { |??????? ????? ???? |????? ????? ?? ????