In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['W', 'l', 'N', '5605', '2105', 'B', '9273', 'K', 'f', 'E', '1843', 'R', '8767', '1303', '2821', 'a', 'm', 'w', '243', 'g', '2897', 'Y', 'm', 'j', 9821, 'n', 'h', 'D'], [6371, 9433, 6091, 'w', 'l', 8643, '5605', '2105', 'B', '9273', 'K', 'f', 'E', '1843', 'R', '8767', '1303', '2821', 'a', 'm', 'w', '243', 'g', '2897', 'V', 5581, 'a', 6007, 'L', 7649, 'o']