상담 간편 전화상담 상품 자세�?보기 If a grammatical principle that is additional to 서툴�?is actually a vowel �?and there is no other choice besides a vowel �?then that grammatical theory can not be additional to 서툴�? �?당사�?제휴 정보제공�?별도�?정보제공 동의�?받고 있으�? �?