14-20. LH %EA%B3%B5%EB%8F%99%EC%A3%BC%ED%83%9D %EB%B9%84%EA%B5%AC%EC%A1%B0%EC%9A%94%EC%86%8C %EB%82%B4%EC%A7%84%EC%84%A4%EA%B3%84 %EB%A7%A4%EB%89%B4%EC%96%BC