????:1?????300???:???????????

2??????????q?

3????????

4???????

5???????

2???12?,??? ? ? 2??12?,??????? ? ??? 2?12???,??? ??????????????? ? 2?????12?????,???????????????? ? ? 2?????????????????12???,??????? ? ????????? 2?????12?????,??? ???????????????????? ????? 2?12?,??????? ? ??? ??????????????:??????????????