In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['y', 6955, 'D', '9393', 'o', 'w', 'K', '3765', 'l', 'B', 'R', 't', 1761, 7431, 67], [5565, 9925, 'K', 349, 7221, 'S', 591, 'D', '9393', 'o', 'w', 'K', '3765', 'l', 'g', 'A', 'Z', 'b', 'a', 'c']