In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['A', 'i', 'k', 953, 2593, 'a', 'T', 'k', 6147, 7021, 'K', 7663, 1893, 'w', 'S', 't', 7051, 'w', 9653, 7863, 'r', 'v', 'K', 5081, 'v', 7511, 'd', 'S', '3157', '783', 'z', '4373', 'b', '101', '8745', '1943', '3731', '213', '1419', '3549', '1983', '4365', '1213', '6133', 'p', '5089', '875', 'x', 'x', '2101', 'F', 'N', '7511', 'g', 'H', 'u', 'A', '527', 's', 'A', 'G', 'd', 8381, 'c', 23, 5169], [4381, 447, 'A', 'h', 'C', 'M', 4421, 2587, 6365, 'Z', 1471, 'S', 'i', 3021, '3157', '783', 'z', '4373', 'b', '101', '8745', '1943', '3731', '213', '1419', '3549', '1983', '4365', '1213', '6133', 'p', '5089', '875', 'x', 'x', '2101', 'F', 'N', '7511', 'g', 'H', 'u', 'A', '527', 'G', 1687, 3295, 'z', 6595, 'X', 'H', 'P', 7441]