??(??)?? ????????????, ???????????? ???? '?? ????'???? ??, ?? ?????????? ???????????????? ?????? ???? ????????.  If a grammatical theory that may be included to ????is often a vowel ??and there is no other option in addition to a vowel ??then that grammatical theory can not be added to ???????? ?????????????? ????, ?? ?? ?? ???? ??? ????? ????- ?