???? ???????(????)????????????? ???? ????????.????? ???? ???? ???? ???? ???, ???? ???? ???? ???? ???? ???? ???? ???? ???? ????? ???? ??????, ???? ???? ???? ?? ??? ??????.If a grammatical principle that may be additional to ????can be a vowel ??and there's no other choice in addition to a vowel ??then that grammatical basic principle cannot be addit