In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['B', 'r', 5629, 4409, 7197, 'N', 'x', 'I', '6145', 'i', 'Q', '1033', '2945', 'K', '4931', 'y', 6505, 9149, 'E', 3067, 819], [2523, 'f', 2623, 'I', '6145', 'i', 'Q', '1033', '2945', 'K', '4931', 'a', 5449, 9193, 6325, 'i', 6901, 'E']