In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['f', 'O', 2831, 2057, 5137, 'z', 6151, 'u', 247, 4921, 'n', 2549, 1247, 'Z', 5209, 6679, 3215, 2873, 5183, 'e', 'r', 'r', 'k', 'e', 'K', '7581', 'e', '5601', 'J', 'O', 'R', '2841', '4089', '1441', '2257', '145', '7299', 'H', '2261', 'p', 'p', 'E', 'r', 4463, 'L', 'N', 7619, 'L', 'V', 'n', 7025], [3245, 4149, 'r', 7415, 519, 3445, 7639, 'O', 'k', 'T', 7799, 'G', 3425, 2411, 'r', 'r', 'k', 'e', 'K', '7581', 'e', '5601', 'J', 'O', 'R', '2841', '4089', '1441', '2257', '145', '7299', 'H', '2261', 'p', 'p', 'E', 'B', 'y', 6631, 6615, 'G', 9257, 'a', 2983, 'B', 3033, 'f', 'N', 8735, 'A', 'K', 1877, 791, 593, 'T', 'x', 8389, 6963]