2?21?,?(?)??????????????????? ?????????? ??? 2???21?????,????? ????? ? 2?21?,?(??????????)???????????? ??????????? ?? 2?????21?,??? ? ? 2?21?????,??????????????????? ??? ????? 2?21?,???????????????????????? ??????? ? 2?21?,?????(?????)????? ? ??? 2???21???,??? ? ??????? ??????:???????????????

??

??:???????????,??????????,??????????????