?? ?? ???? ?? ??????????? ???? ???? ???? ???? ???, ???? ???? ???? ???? ???? ???? ???? ???? ???? ???If a grammatical principle that is additional to ????can be a vowel ??and there's no other alternative in addition to a vowel ??then that grammatical theory cannot be included to ??????????(??)??: ???????? ???????????? ??·???????(???????? ?????????