????? ?? ???? ???? ?????? ??????? ??? ???? ?????? ??? ???? {??????.???? ?? ?????? {???????{ ?? ??????? ? ??????? ????? ?????? ??? ???? ?????? ?????? ????? ??? ??? ?????? ??????? ??? ????? ???????????. ???? ??? ??????: * ???? ??? 21 ?????. * ?????? ??? ?????? ??????? ???? ????. * ????? ???????? ?????? ??????. ????????? ???????? ?????? ??? ????