Detailed Instructions: In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
Q: ['N', 'z', 9641, 'z', 'f', 'o', 'L', 'D', 'w', 2793, 'b'], ['Q', 'R', 'z', 'f', 'o', 'L', 'A', 4343, 8711]
A:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
z, f, o, L