In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['j', 'i', 'V', 'b', 'g', 'W', 'I', '4233', '4545', 'z', 'i', 'a', '6701', 'K', '2363', 'T', 1971, 6139, 'T', 8535, 'l', 6087, 513, 1663, 'q', 'o'], ['n', 7991, 2921, 5103, 1583, 1311, 'H', 3077, 'g', 'W', 'I', '4233', '4545', 'z', 'i', 'a', '6701', 'K', '2363', 'I', 'd', 'X', 'I', 'r', 'C', 'X', 1661, 873]