In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[3523, 1243, 6733, 'g', 2603, 5457, 'y', 'l', 'k', 6565, 'i', 9237, 4929, 'i', '4221', '943', '8445', 'W', 'q', 'A', '627', '8157', '7789', '7129', 'd', '9283', 'B', '8851', '5293', '9457', 'x', '2153', 'A', 'U', 'B', 8601, 'y', 4823, 3409, 'K', 7029, 'G', 6715, 505], ['B', 'K', 'i', 'i', '4221', '943', '8445', 'W', 'q', 'A', '627', '8157', '7789', '7129', 'd', '9283', 'B', '8851', '5293', '9457', 'x', '2153', 'A', 'F', 'f', 3133, 'T', 'q', 6789, 'D', 6239, 'm', 7991, 9059, 4941, 4681, 5751, 6483, 'h', 'q', 5285, 8567, 3031]