???? ???????? ????????? ???? ???? ?? ????????? ?? ?????????????????, ??? ??, ?????? ?? ??, ?? ???????? ?? ??, ?? ?????? ?? ?? ????????????.??? ?? ?? ?????? ?? ?? ????? ??? ?? ?? - ?????? ?? - ?? ?????If a grammatical principle that may be additional to ????is a vowel ??and there's no other choice other than a vowel ??then that grammatical theor