????:1???????????:????????

2???????

3??????????

4?????????????

5??????????

2???????12????????,?????????????????,?54????????,???????????? ? ??????? 2??????12?????????????????,?,???????54????????,???????? ????? ? 2???????12????????,?,??????54?,??????????? ?? ????? 2?12?????????????????,?,???????54?????????????????,????????? ????? ?????? 2?12?,????????,??54???????,???????????? ??????? ????????????????? 2?????12?,?,?54?,???(?)???????? ????? ??????? 2??12??????,?????????????????,??54?,????????????????????????????????????? ? ?? 2?12?,??????,???????54?????,???????? ? ? ??????:?????????