?? ??????????3???1???
????:1????????????:??????
2???????
3??????
4?????
5???????
???9???4??? (?)??4???????????,?4?????????,?????????3??1??
9??????????4????4???????????????????,???,????????????????????,?3??1??,???,??,????
????,???,??????????????????????????????????????????????????????????????????????????????????????(???????),????????????(????????)
??????:????????????????????????????????