?? ?? ??? ??? ?? ??? ? ???? ???? ??? ?? ???? ???? ??? ? ????????? ?~??- ?? ???? - ???? ???? - ?? - ?????- ???? - ???? - ?? ?????- ????If a grammatical theory that is certainly extra to ????is often a vowel ??and there is no other selection in addition to a vowel ??then that grammatical principle can't be extra to ??????????????? ?? ?