???????2??????2????????? ?????????,?????????????????????????2??????????????????????????????????1????,??1????????????31????,???,??????????????????????????????????????????19????

?:????,?1??????????????????31???,????,????????????????????????

??????????????????????????????????,?2?1??????????,?,???????

?,???1??????31??,??????????,?????????????????,??

???????????????????,????????????????????,???????,??????

???,?????2?????1??????,??????????,?????

???:??

??

??:???????????,??????????,??????????????