?????? ???????? ?????????, ????????????? ??????? ????????. '(??, ?? ??) ??????'?? ???????? ???? ???????If a grammatical theory that is certainly extra to ????is actually a vowel ??and there's no other choice other than a vowel ??then that grammatical principle can't be additional to ???????? ????? ???? ???? ?? ?? ???? ???? ??? ?????? ????????????