In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['y', 969, 'F', '5949', 'U', 'T', 'v', '1821', '7745', 'S', 'z', '3085', 't', '7769', '5585', '6015', '3847', 'w', 'S', 'n', 'A', '8959', 't', 'c', 'D', 'Z', 'k', 2699, 'T', 'k', 7815], ['w', 3821, 'Z', 8813, 8603, 8721, '5949', 'U', 'T', 'v', '1821', '7745', 'S', 'z', '3085', 't', '7769', '5585', '6015', '3847', 'w', 'S', 'n', 'A', '8959', 'j', 8519, 8063, 8103, 'K', 'Q', 4155, 695, 'Q', 'F', 'w']