In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['Z', 6295, 'h', 's', 'p', 'n', 'y', '2955', 'g', 'k', 'e', 'b', 'H', '6911', 'm', '2755', 'q', 'j', 'I', '2349', 'u', 'i', 'p', 'W', '4147', '1165', 'M', 'Y', 'M', 'P', 3157, 3989, 'E', 7521, 8795, 3469, 6881, 3877, 'H', 8527, 1987, 4881, 8725, 4919], [1269, 'B', 283, 8207, 6399, 9027, 9837, 1879, 3673, 3207, 4871, 7465, 2941, 8381, 's', 'p', 'n', 'y', '2955', 'g', 'k', 'e', 'b', 'H', '6911', 'm', '2755', 'q', 'j', 'I', '2349', 'u', 'i', 'p', 'W', '4147', '1165', 'V', 6485, 7111, 8851, 'H', 'A', 4635, 'x', 'c', 571, 5535, 8271, 4461, 849, 5005, 3827, 5869, 'x', 'H', 't']