In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['y', 9685, 'q', 7345, 'K', '2181', 'q', '8709', 'u', 'D', 'x', 'c', 'a', '5555', 'b', '6847', 'V', '1093', 'j', 'H', 2233, 2493, 'M', 9827, 'A', 'u', 4509, 79, 'D', 'P', 3741, 'q'], [8679, 'D', 5615, '2181', 'q', '8709', 'u', 'D', 'x', 'c', 'a', '5555', 'b', '6847', 'V', '1093', 'j', 'B', 'a', 'w', 5101, 'L']