(??)??????????:???? 2?1????????,??????? ?????????????????? ????? 2??????????????????1????????????????????,????? ????? ??? 2???1??????,?????????????????????????????? ? ???????? 2?1????????,????????????????????????? ? ????? 2???1?????,????????????????? ? ????????????????????? 2?1???,?,??? ? ????????????????????????? 2???1?,????????? ? ????????????????? 2?1????????,???? ????? ????? 2????????1???,??????? ? ???????? 2?1???????????????????,?????????????? ??? ? 2?1???,?????????? ??? ???????? ??????????????????????:?????????????????????????