?? ???????????
????:1???????????:???????????
2????????????
3???????????
4???????
5????????
12?2???,????????????? ? ? 12???????2?,?????????????? ????? ? 12?2?,????? ???????? ??? 12???2?????,?????????? ????? ? 12???2?,??? ????? ? 12???????2?,?????????? ????? ? 12????????2???,??????? ??? ????? 12?2???,??? ? ? ??????:????