?? ??????? ???????????12?
????:1????????:??????
2?????????????
3????????????
4??????????
5???????
??11?30? (?????????? ???????????????????)11????30?,???????????????????????????,??,???????30??????,12????????1?3??,???????????????????,????12??
30??,??,??,??11?30?12???????????1???,?12??????????????1?2?????
???????,?10???????,??????20???,?????????????
????,??????,??
??,12???????????1????3??????????,??????????4?6?,??????,????????????????????????????????8?10?,??12???4???????6?????????,??7?????????8???????,??9???
????,???????,???????,11???????????????30??????12?????2??????????,???????????,??
12?????????????2??5?,?????,??????????????????????????
??????,?,?????????????,???????????,????????????,???????????,????,?,?????????????????????,??????????????,??????,?????????(????) ???:???????????????????