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