In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['o', 9491, 8409, 'O', 'o', 'd', 9857, 8833, 1331, 'Q', '1477', 'Y', 'E', '9289', '6629', '9165', 'L', 'E', '903', '6519', '8539', 'U', 7497, 2499, 161, 'C', 'z', 4813, 's', 'a', 4355], ['d', 'k', 'e', 't', 'B', 'P', 'D', 6715, 'Q', '1477', 'Y', 'E', '9289', '6629', '9165', 'L', 'E', '903', '6519', '8539', 'a', 'O', 7067, 'M', 3541, 'u']