???????? ???? ? ??? ?? ?? ????????If a grammatical theory that's extra to ????is actually a vowel ??and there's no other option in addition to a vowel ??then that grammatical basic principle can not be additional to ????- ???? ??: ??, ??, ??(??, ???????? ??), ??????, ??, ?????- ?? ???????????????????? ???? ??. ???? ?????????????? ??????????????????