In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['W', 'E', 'x', 'P', 8555, 4499, 'k', 'Y', 2455, 'w', 'E', 'E', 2187, 7291, 3079, 3181, 'w', 4477, 'y', 'l', 's', '7201', '3787', '7351', 'f', 'f', 'Q', '6333', '8669', 'T', '2497', '2271', '649', '1785', '2103', '9225', '3747', 'N', '8701', 'S', 'h', '5647', 'w', 'C', 'u', 6299, 9569, 1767, 5359, 'F', 'a'], ['o', 'f', 'c', 3707, 7511, 4713, 1355, 6255, 'm', 8667, 7249, '7201', '3787', '7351', 'f', 'f', 'Q', '6333', '8669', 'T', '2497', '2271', '649', '1785', '2103', '9225', '3747', 'N', '8701', 'S', 'h', '5647', 'w', 'C', 'R', 'F', 'i', 'G', 7621, 8157, 'R', 9309, 'T', 'V', 5299, 2911, 'S', 2867]