a?????????°±??ˉè|??o?????????????????????????????????????????°?è??é???????o??°??¨???é?¢??????a??
??ˉ?¥¨?????¨?¥1èo???????è??é£?é£?è???o???°???
?-???????????°????éo????è???1??????ˉè?°?°???????èμ·???
è?ˉ?1?????¥1??ˉ????????????
a???°?????????????????????????èˉ?????°?è??é?????????????o??°?¢????????o????a??
?-?????????????é???o?é?????é?¢?????????????o?è?????????¤′?1????????|????é????????
é???o?é?????????¥1???è????±???????¤′?????§???
a?|a?|
?????°????ˉ???????
?????????è§???°?¥1????°±?′§?′§????¥1????o?è????¥???
?-????????°?????????±????′§?′§??????a????????????|??|??????¥?o????a??
????o??¤????
?-??????????è§???-?????¥é???o?é????¨é???°?é????¢?????1è′|??·??|è?¤??§???????????§?????¥?????????????§??????????????-????è?ˉè???????????
?-?????????3?o??????o??????????¤???????
?¥1?1°?o????è???????-é£??????°è¥???°?????o?¥¨???????¤????é?£?????????????o|è??è?a?·±????????????????????????
è°????????¥1???????§¨??|??????????????oé?¨?????′è¢??a??????o??°????§?????????|????o????è·ˉ???
?§??????????èo???????è????|????????????é?????
?-?????????????èˉ????????????¤??¨???é?????a???????3?12????1????a??
?§??????????è?2è????ˉ??????é??????¥1???é??????????????
a??????????ˉ??¥???????°???????解??3è????a?-??§????a??