???????? ?????? ?????????? ?????????? ????????????? ???? ???? ???? ???? ???, ???? ???? ???? ???? ???? ???? ???? ???? ???? ?????? ?? ?? ?????? ?? ?? ????? ??? ?? ?? - ?????? ?? - ?? ?????If a grammatical theory that is included to ????is usually a vowel ??and there's no other solution besides a vowel ??then that grammatical basic principle can not b