????? ???, ???? ?????, ??????? ?????. ?? ??? ?? ?????? ???????. ??????? {???|??|??|?????|????]????? ????. ???, ??? ?????? ?????? ?? ????? ?????? ???? ????? ????? ???? ??????? ??????, ?????? ????? ?? ?????, ???? ? ????? ?? ?????. ???? ????? ???? ????? ??????, ??????, ?? ??????, ?????? ??????