In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6211, 7149, 'I', 'L', 4809, 1933, 'N', 5705, 8773, 6831, 'j', 'P', 3115, 4987, 6029, 'c', 'M', 'z', 2761, 'N', 'q', 1995, 'v', 'b', '4745', 'D', 'O', 'b', '349', 'q', '2139', 'd', '3373', '1155', '9303', 'z', '8945', '3739', '9383', 'y', 'p', 'U', 'S', 'K', '919', '9247', '2391', '1989', 'Y', 'K', 'W', 'o', 'G', 'v', 't', 6251, 9187, 8903, 6941, 8271, 'V', 'W', 1305, 3229, 2563, 2915, 6847, 'w', 'x', 161, 'U'], ['P', 777, 'T', 'C', 'W', 5271, 'v', 999, 2073, 'T', 'Z', 'L', 'g', 'M', 959, 3491, 'v', 'b', '4745', 'D', 'O', 'b', '349', 'q', '2139', 'd', '3373', '1155', '9303', 'z', '8945', '3739', '9383', 'y', 'p', 'U', 'S', 'K', '919', '9247', '2391', '1989', 'Y', 'K', 'i', 'N', 2999, 'k', 'Z', 1809, 5011, 'W', 3157, 'N', 3569, 'A', 1127, 9159]