In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[7751, 'u', 4883, 'b', 'l', '3245', '8995', 'V', 'w', '9379', '629', 'S', 'e', '7063', '2685', 'v', 'e', 'p', 2279, 'O', 'H'], ['w', 5273, 5967, 2765, '3245', '8995', 'V', 'w', '9379', '629', 'S', 'e', '7063', '2685', 'x', 'S', 'a', 2737, 205, 2989, 9219, 6411, 9941, 969]