???????????? ??????? ???????????? ??? ??????? ?? ?? ???? ???? ???? ???????? ?? ???? ???????????? ??·????? ???????????????? ?? ???????????? ?????????? ?? ???????? ?????????????? ?????? ?? ???????? ?? ?? ?? ?? ?? ?? ?? ??If a grammatical basic principle that is extra to ????can be a vowel ??and there is no other alternative aside from a vowel ??the