??????2??????????????17???????? (???? ??????)?????????17???????????,?,?????10??

???????????????????,17???????????,???????,18??,19?,??????????????20??21???

?,18???,??????,??????????????,????:????8????????????????10??

19?????????????,??????,???????????:???????????8???????12??

?????,??,?,????????(????) ??????????:??

??

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