In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[2481, 7613, 'S', 'B', 'd', 'p', 'n', 'w', 'B', 'e', 3035, 1591, 'S', 5411, 'l', 1349, 7681, 'b', '2593', '6209', '5497', '3161', 'l', '8093', 'Q', '1759', '7729', '2535', 'R', '7043', 'w', 'H', '6243', '1549', 'I', 'Z', 1083, 'T'], [2733, 'A', 'S', 9483, 293, 'b', '2593', '6209', '5497', '3161', 'l', '8093', 'Q', '1759', '7729', '2535', 'R', '7043', 'w', 'H', '6243', '1549', 'U', 5421, 8223, 'f', 9045, 9197, 4009, 'W', 2173]