???????¥1?????¥???è?ˉ???????????¨?¤?é?¢é??è§??o??1??????ˉ?????????è????¤???a???2?è????????a?????
é?£????????????èˉ¥?|????è?a?¤????
?2?????????°?|?????1??????¥é???-????????????¥é???????-?????a?°??§??§????
?-????????o??2????????|???????
è?????????2?è????¤???é??è????????è?????è??è?????????????′?1????????|????a?|a?|
a?|a?|
???????1′????????????????????′????§???¨??¨???
???????????¨?o|????¥????é?£?¤????????o?é?£???é?′????¤§???é¤???????
????·2????1???ˉ?-??????°?¥1????????a?????¨è????°?a??????1?????????????¤?é?¢???è????????é??é????o?¥?a??a??
é?¨?¤?a?|a?|
?????????é?a??????é£???′è??è?£???è????????é??è?2????·¥è¥?è£????
é?????é????°?¢3???è???¤′???
?°′?????ˉ??????????????′è?±??o??????????|??????????
é¤???????é?¨??????è?|??°???èμ·????????????????£°???a???ˉ1???èμ·?°??§??????????é¤????è¢????????????????????o??????±?-????è????¥?????¢?oo???a??
?-????????o???????é??è?2???è£??-????
?¥1????????????
?¥1?2???????è§?????????′????¥1?o|?????¥é??????-??o??¥1????1′???
?¥1?ˉ1??????????·??·??????????a????±?-????a??
?¥1???????|????????¥1??¨è????°?a?????????¨????????′é?¢??????è?????é??è?2?????????????¥1???èo????????1????????o???????è§??o????
é?¨?????§??-??????a?|a?|
???????????a?????¨????1′????o|????????¥?-???|è??è??è?????
?¥1?????-???????·??·????é????????
?????????????????′?????o?¥1????|????è????????????¤·a?|a?|