?? ???? ???????? ?????? ????????? ?? ??????.??????? ???? ??? ???????????? ???????? ??????????. ??????? ???? ??????????.If a grammatical theory which is additional to ????can be a vowel ??and there's no other choice other than a vowel ??then that grammatical principle can not be additional to ?????????? ???? ?? ???? ??? ?? ?? ?????? ?????? ?????? ??