In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['H', 'W', 'O', 'U', '3519', '63', '7151', '5803', '9761', 'l', 'S', 'A', 'P', '2157', '4715', '1493', 'Y', 'A', 'J', '3029', '7289', 'Q', 'f', 'R', 'd', '3517', 'D', 'c', '9823', '8681', 'T', '6347', '8141', 'n', 'u', 'G', 7057, 't', 10007, 'w', 8291, 'F', 8825, 'w', 'C', 545, 337, 8071, 'p', 'l', 'r', 'R', 'W', 'g'], ['B', 'e', 9847, 8027, 'e', 'z', 9311, 7899, 5029, 'u', 'w', 1625, 'k', 9685, 7019, 's', 'C', 5553, 'p', 9107, 3845, 5813, 'F', 8325, 'b', 'M', 1721, 701, '3519', '63', '7151', '5803', '9761', 'l', 'S', 'A', 'P', '2157', '4715', '1493', 'Y', 'A', 'J', '3029', '7289', 'Q', 'f', 'R', 'd', '3517', 'D', 'c', '9823', '8681', 'T', '6347', '8141', 'n', 'C', 'f', 'K', 'c', 4929, 't', 2947, 9349, 'S', 'r', 9517, 5169, 'r', 2671, 39, 't', 'X', 4349, 4269, 'b', 1165, 5817, 'E', 'g', 9741]