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