In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['Q', 3413, 3075, 6123, 9915, 'c', 5869, 667, 9559, 7757, 'r', 'Q', 'S', '5391', 'e', 'q', '469', 'n', 'F', '8725', '1843', 'M', '1177', 'l', '8455', 's', '2011', '4629', 'G', 'f', 'B', 'B', 'y'], [1343, 8593, 5949, 689, 'y', 'j', 1577, 'm', 'd', 'z', 237, 'j', 9217, 'o', 'S', '5391', 'e', 'q', '469', 'n', 'F', '8725', '1843', 'M', '1177', 'l', '8455', 's', '2011', '4629', 'k', 'M', 'T', 'B', 'L', 9095, 's', 'K', 'I', 3439, 'O', 'y', 'd']