In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['L', 2365, 'R', 'R', 3247, 9545, 'v', 3493, 9811, 'p', 9547, 'b', '2995', '6705', '4787', 'T', '8877', '3015', 'd', 'g', 'Q', '707', 'S', 'M', 'k', 1027, 9495, 'L', 'D', 'k', 'w', 2737, 'f', 'b'], ['f', 'o', 'h', 501, 8745, 'W', '2995', '6705', '4787', 'T', '8877', '3015', 'd', 'g', 'Q', '707', 'S', 'M', 'q', 'M', 'M', 4829, 3419, 'y']