?? ????4??? ???????????
????:1?????:??????
2?????
3?????????
4????????????
5?????????
???12?????????????????6??? ??5???:12??5??????????15?????28?????,???????????????????????????,??,?????????,??,????????????????????????,????4??????????????,?????????1???????????????,?;3????????????,??1???????????,???2?????????
??,??????????????,??????????????????,?????????????????,?????,??????????,????????????????
??????????? ??:??