In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['J', 'e', 'g', 'q', 'z', 'N', '517', 'O', 'R', '2613', 'l', '3007', 'K', 'k', '3347', 'r', 'u', 's', '2399', 'v', 'r', 'i', 'V', '8833', 'g', 'R', 'x', 'h', 'n', 6207, 9559, 2139, 4597, 4199, 9489, 'm', 8439], [9887, 4503, 'i', 7287, 'u', 'C', 8099, 3257, 1979, 'N', 8325, 7613, 'N', '517', 'O', 'R', '2613', 'l', '3007', 'K', 'k', '3347', 'r', 'u', 's', '2399', 'v', 'r', 'i', 'V', '8833', 'g', 'R', 'd', 'w', 2619, 2631, 'v', 5797, 'g', 'P', 6801, 'o', 'r', 6065, 4615, 'n', 8475, 'H']