Phần 3 từ Q, R, S, T, U, V[kdn-iframe width="560" height="315" src="https://www.youtube.com/embed/videoseries?list=PLf7IpdVG0lfMWysKfzd48v0Ys2BjjU07u" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen][/kdn-iframe]