????? ??????? ?????? ?????? ????? ????? . ???? ???? ??? ???????? ?? ????? . ?? ??? ???????? ???? ??? ??? ?? ???? ?????? . ???? ???? ???? ?? ??? ?????? ?? ?????? ???????. ???? ???? ????? ?? ???? ????. ????? ??????? ????? ????? . ???? ????? ?????? ??????. ????? ??? ????: ???? ????? ?????? ??? ????? safely ??? ????? ?????? ?????