?? ?? ???? ?? ??????If a grammatical principle that is included to ????can be a vowel ??and there is no other possibility aside from a vowel ??then that grammatical principle can not be extra to ????- ???? ??: ??, ??, ??(??, ???????? ??), ??????, ??, ??????????????????????????????? ????? ??????????? '???????????????? ???? ?????.????? ??????????? ??