?????? ??????????????????? ?? ??????? ???????? ??? ???????????? ???? ???? ????? ?????? ????????? ???????? ??? ???? ????, ?????? ????????????????? ???????? ?????????? ?????? ???????????? ?????? ????? ???? ???? ??????If a grammatical basic principle which is extra to ????can be a vowel ??and there is no other possibility aside from a vowel ??then th