???? ???????? ????????? ???? ???? ?? ??????? ???? ??? ??? ??...?????????? ???????????? ???? ??????...????? ???? ?? '??????' ?????????? ?? ???????? ???? ?? ?????? ???????? ?? = ????&??????®If a grammatical theory that's extra to ????is usually a vowel ??and there is no other solution besides a vowel ??then that grammatical theory cannot be included