???? ???????? ????????? ???? ???? ?? ??? '(??, ?? ??) ??????'?? ???????? ???? ?????????? ?? ?? ?????? ?? ?? ????? ??? ?? ?? - ?????? ?? - ?? ?????If a grammatical principle that may be included to ????is usually a vowel ??and there's no other alternative aside from a vowel ??then that grammatical theory cannot be included to ???? ????????????????