%EC%8B%9C%EC%A6%8C2 21%ED%98%B8 %EC%B0%BD%EB%85%95 30A-2-O-2B %EA%B3%84%EC%95%BD - %EA%B7%B8%EB%A6%B0%ED%99%88%EC%98%88%EC%A7%84