In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['F', 'g', 2715, 'n', 'R', 'I', 8459, 'P', 8253, 'R', 'L', 8735, 'K', 3011, 'M', 's', 'P', 647, '2703', '809', '1537', '6597', '5003', 'j', '1059', '7547', '1117', '167', 'E', 'Y', '9027', '5421', '8337', 'N', 'k', 'M', '4219', 'y', 'B', 'c', 1603, 'r', 'I', 'G', 7181, 't', 6373, 1969, 4629, 'm', 3527, 5695, 1877, 'B', 'S', 2705, 3921, 8447, 1299], [7231, 'R', 7687, 2701, 2545, 3357, 615, 4149, 'D', 9489, 'U', 'U', 'i', 8211, '2703', '809', '1537', '6597', '5003', 'j', '1059', '7547', '1117', '167', 'E', 'Y', '9027', '5421', '8337', 'N', 'k', 'M', '4219', 'y', 'B', 'W', 7589, 'N', 6653, 'T', 4249, 7487, 8717, 't', 6103, 'F', 3625, 'L', 6223, 'D', 6901, 'D']