?? ????????????? ??????????
????:1???????????:???????
2???????????
3???????
4?????????
5??????????
????6??????20???(??????)?????,6????20????,????
??6????,?,????????,???????6??20??????21??,??????
6?????20???????????????,???? ?? ??????7??34????,????????????,??????????????,?????????????????6?20??8???????6???21?8??,?????????????????????????(???),?(????????)?
??,????????????????????????,?18??????????,??????,???(?)????????????????
??,?????24?????????????????????????????,6?20???20???6?21?20???????????,??????????(???????)?(???);?(????????)??????????????(??);???(????)?????????????(?????????)???????????????(???)?????(??????)?
????,?,???????,?,???????????????;??,?,???;???????????,??????????????,??????,????(???)
????:?????