In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['K', 1057, 8563, 't', 'K', 8067, 'j', 'z', 'n', 'T', '2715', 'x', 'r', 'n', '6809', 'o', '8815', 'L', 'W', '6195', 'K', 'c', '4003', 'y', 'K', 'r', 't', 3819, 2647], [4559, 'E', 'd', 'n', 2567, 'A', 41, 'K', 9141, 'C', 'k', 3297, 'T', '2715', 'x', 'r', 'n', '6809', 'o', '8815', 'L', 'W', '6195', 'K', 'c', '4003', 'y', 'd', 't', 'p', 5589, 'b', 'x', 5047, 4377]