In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[3905, 'q', 873, 'B', 6475, 1915, 'Z', 'R', 'f', 'i', '4547', '4413', '2407', 'n', '2591', 'w', 'H', 's', '415', 'E', '9317', '2985', 'l', 'T', '8533', 'l', '6903', 'd', 'D', 'Z', 'R', 'P', 'h', 9355, 2329, 'R', 'y', 't', 'p', 1801, 'H', 9185, 2643, 'm', 'U', 'y'], ['D', 'Q', 'n', 6093, 'f', 'i', '4547', '4413', '2407', 'n', '2591', 'w', 'H', 's', '415', 'E', '9317', '2985', 'l', 'T', '8533', 'l', '6903', 'P', 3131, 1227, 'H', 'O', 'R', 5573, 9209, 4675, 5851, 6941, 3731, 4255, 9465]