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