?? ??????)??????? ?????? ?? ????, ??, ?? ?? ????.If a grammatical principle that may be additional to ????is usually a vowel ??and there is no other option other than a vowel ??then that grammatical theory can not be added to ?????? ???? ??????, ???? ???? ???? ?? ??? ??????.?? ???? ???? ?? ??? ??????????????? ?????? ????????I in fact come across th