????:1?500?3????????:????

2??????

3?????????

4???????

5??????????????

?10?????12???????????????????????? (???????????? ???)???,??????????????????12?????,?????????????????????????????????????,????????????????????

???????????,?9?20??20?????,??????????????8???????????????????????????????????,????,???????????????????????

????,????????????????,??,??????????,???????????????????????,?????,????

????,??,????????????????????????,????,??????????????,?????,?????????????

?????????,?????????????,????????????????,???????????(????????????) ???????????:???????