???????????????é???o??′2?°±?????¨?¥1????o?????????·?3??????£???a????±?-????????2??-??????????????o???????a??
?±?????·????????????aèˉ′???a??????1??????±?-???????????1?é???2?????????¥?-?????o???????a??
é???o??′2???é??é?aè??????????¢???????·??·??????£???a??????????ˉè????????è????a?oo??????a??
è???¤??1????????±?????·??°±????o?é???o??′2?????1???????1???ˉ?????ˉ??????è?¤????¥3?????????
é???o??′2?ˉ1?¥1????¥?è???1??o????????oo?????3è±????
?¥1?????¥????????1???????????ˉ?¥??¥1?????¥????1?????????±???
??????????oa??μ??¥????????????????oo??o????????oa??é???o??′2?°?è????±?±?????·?a?????
?ˉ?????1′??????é???????o?¥1???????????a?o????é?????a?|a?|
è????·????¥??????¥?-?????±?????·?è???o?????1′???
??????????????¥èˉ′?????ˉ??-?1′????????a???é???o?????¤????
è?????????¤????é???o??′2????o????é?£??a?oo?°±è|????????o????
????¥1?ˉ1??′??a???????¤±?????????????????????é???o??′2??o??°??¨?¥1?????????é??????????o?o??¥1??ˉ????????????
?¥1?????¥??o???è???????????????o?????????a?oo????????±?¥1???
??ˉ??°??¨????±?????·??????¥é?????è?a?·±é??????|?è°±???
è?a?§?è?3???????¥1?????aè¢???±è?????
?±?????·????è???¥???¥???????????μè????????é????±?????1????o??¥1????¤?????°±???è???¥????é????????
?¥1?¥?è?2??¨????????1????o????é??é?????
???¨???è??è??????·2?????????é??è?3é???o??′2??????