??? ??????? ?????? ??????? ?????? ???? ?? ???????, ??? ???? ???? ?? ?????. ???? ??? ??????? ???? ?? ???????? ?? ?????, ????? ?? ????? ???? ?? ?? stabillity. ???? ??? ??????? ???? ?? ?????? ???????, ????? ??????? ????????? ?????? ???????. ?????? ??? ????? ??????? ????? ?????? ?????? ??? ????? ???????? ??? ????? ??????? ?????? ??? ?????? ????????.