????:1??????:51?????????

2?????????

3?????????

4??????

5???????????

2?????1?,??? ??? ? 2?1?,????? ??????????????????? ? 2?1?,??????? ??? ??? 2?1?,?????????????? ?? ? 2????????1??????????????????,????????????????????????????????? ???????? ???????????????????? 2?????1?,???,????????????????? ??? ????? 2????????1????????,????? ?????? ????? 2?????????????????????????1???,??????????????????? ??????????????????????? ???????? 2?????1?????,??????? ????? ?????????????????? 2?1?????????????????????,??? ????? ????????????????????? 2????????1?,?????????????????????????? ????? ???????? ????:??