?? ????????????? ??????
????:1????????:??????
2??????????
3???????????
4????????
5???????????
?4???,????????,?,????????????????1?,?????,?,???????
???????,8???????????????????????7????4??,?,???????????4??30??????????????????,??????????????????1214?????????
?,????????????????8?????7??????????????????????4????16?,?????,???,??????????,???????????,?,???????????????,?????
8?7??????????????5??16??,????????,??????????????????,??(?? ?? ?? ???????????????????? ??? ??????????????????????)
????????:?????????????