?? ??? ???? ??? ???? ???????. ???? ??? ???? {?????|?? ????. ??? ???? ??? ???? ??? ???? {??????|????. ????? {????{ ?? ??? ??? ??? ???? ????. ??, ??? ?? ??? ?? ??? ?????? ??? ???? ???, ??? ??? ??? ??? ???? ? ???? ??? ?? ????. ??? ??? ??? ??? ??? ??? ??? ?? ???? ???? ??? ??? ??? ????. ??? ??? ???? ??? ???? ????. ?? ??? ?? ??? ?? cluster? ???? ???