?? ??? ???1?2????????????????
????:1?????:???????????
2?????
3??????
4????????
5???????????
?7????????????13??(?? ??????????)???????????13??,??,???2?,???;1???????????,??
????7??12?17?20?????,?????????????????,?????1???2?????????????????????
???,?,????????7????????13????9?????????50????????????????????,?????2?,??1?????????,??????
?,?????????????(????) ???:???????????????????