??, ???? ???? ?? “????? ??? ?? ?????? ?????? ?”? ?????? ?? ??????. ??·?? ?????????? ??(?? ???? ???? ??, ?????? ????? ?????????????????. ??If a grammatical principle that is certainly added to ????is a vowel ??and there is no other selection besides a vowel ??then that grammatical theory can not be included to ???????? ????? ???? ???? ?? ?? ???