In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[7225, 2731, '1333', '1699', 'a', '6345', '8221', '5899', 'Q', 'T', 'T', 'w', '8621', '957', 'y', '649', 'P', 'V', 'F', '6013', 'h', 'j', '3199', 'l', '3413', '5103', 'i', 'q', 'u', 'w', 'Z', '7687', 'n', 'R', 661, 't', 1103, 5853, 'F', 'H', 'u', 5261, 'F', 6749, 'G', 6939, 2157, 7699, 'n', 'K', 3695, 8527, 'o', 'a', 'e'], [1849, 'f', 7415, 5647, 9689, 'L', 'Q', 'n', 4987, 1009, 'n', 'W', 'V', 571, 1197, 'a', 2131, 't', 'C', 8687, 'z', 5635, 9143, 777, 'l', '1333', '1699', 'a', '6345', '8221', '5899', 'Q', 'T', 'T', 'w', '8621', '957', 'y', '649', 'P', 'V', 'F', '6013', 'h', 'j', '3199', 'l', '3413', '5103', 'i', 'q', 'u', 'w', 'Z', '7687', 'Q', 2631, 'X']