???? ???????(????)????????????? ???? ????????.??????? ???? ??? ???????????? ???????? ??????????. ??????? ???? ??????????.???? ?????????! ??????????(??? ??????????, ???????? ??If a grammatical principle that is added to ????is really a vowel ??and there's no other choice apart from a vowel ??then that grammatical principle can't be added to ???? ???