?? ???????? ???????????
????:1??????????:?????????
2???????
3???????
4???????
5????????????
?????????12????21???????????? ?,21????,?,???????????4~8?;????????????????????2~4???,??,?????,?????
?
21??,??????,???4~8?;??????????????????????????????????2~4??????7~8????9~10??
?12????21??08??????:????,12??????21??08????22???08????????????,????????????????????????????????????????????????5~6??????????????7~8???????;????????????????????????????????????????????????7~8???????????9~10??????????,????9??????????????????????10~11???
???????????????(12??21????????????08?-22????????08???????????????????)??
?,?,????,??
???????????,21??22??,?;???????????????????????????
????
12??21??08???22????????08????,??????????????????????????????????????,??????????,??(3~9???????????)????????????????????????????????????????????????????5~6?,?7~8??????????;????6~8?,????9~10???????
?(12????21???????????08?????????-22???08?)12????????????22?????????????????08??23??08???,???????????????????,?,?(3~6?)??????????????????????5~6????????????,????7~8?;?6~8???????????????,???????????9~10?????
?(12?22??????????????????08?-23?08?)12?23?08???????????24??08?,????????????????????????????????????????,?????,???????????????????????4~6?????????,?7~8?????;??????????6~8????????????,??9~10???????
?(12?23????08???-24??08???) ??:???????????