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