In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6431, 'w', 'G', 279, 'B', 'q', 'U', 'k', 'b', '1183', 'Z', 'j', 'd', 'z', 'D', 'j', 'A', 'u', 'V'], ['Y', 3307, 2795, 'U', 'k', 'b', '1183', 'Z', 'j', 'd', 'z', 'K', 'u', 3663, 'd', 'v', 5281, 8493, 2513]