In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['b', 8375, 'Q', 6199, 'Z', 9123, '3095', 'M', 'Q', '4449', 'y', 'W', 'w', 'd', 9821, 1147, 'b', 8947, 8651, 'x'], [9999, 7433, 7255, 'p', 'N', 613, 'J', '3095', 'M', 'Q', '4449', 'y', 'W', 'w', 'o', 'J', 8821, 'n', 8405, 7605]