�?블로�?전체 카테고리 글 전체글 보기 화면 최상단으�?이동 If a grammatical basic principle that is definitely included to 서툴�?is a vowel �?and there is no other selection other than a vowel �?then that grammatical basic principle can not be included to 서툴�? - 마스크의 기준: 성상, 형상,