�?블로�?전체 카테고리 글 전체글 보기 화면 최상단으�?이동 If a grammatical basic principle which is extra to 서툴�?is actually a vowel �?and there's no other possibility other than a vowel �?then that grammatical theory can not be included to 서툴�? 의약품안전나�?의약품등검�? 의약�