의료보험 국민건강보험공단 대구수성지�?주소 전화번호 팩스번호 주차 수성구 If a grammatical basic principle that is certainly additional to 서툴�?is often a vowel �?and there's no other choice in addition to a vowel �?then that grammatical basic principle can't be additional to 서툴�? 인공지�