https://www.youtube.com/watch?v=uSc5BO730us&ab_channel=%EB%AF%BC%EC%B4%88%EC%97%90%EB%B0%A5%EB%B9%84%EB%B2%BC%EB%A8%B9%EB%8A%94%EC%82%AC%EB%9E%8C

유튜브에 올리신분 있는데 왤케 약해보이지