???? ?? ??????????? ???? ???? ?????? ????? ?????? ?? ?????? ?????? ?? ??????????? ???? ???? ???? ????? ????? ????? ?????. ??? ?? ??? pipes? ??????? ? ???????. ????? ??????????? ???? ??? ??????? ???? ?????? ???????? ??????? ???????? ?? ????? ????? ??????? ?????? ???? ?????? ??? ??? ???? ???? ??????. ????? ????? ??????? ????? ?? ????? ????