In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['M', 's', 7963, 'Q', 'b', 'N', '8301', '2479', '2729', '4023', '4955', 'Q', 'Y', '2939', 'n', '2985', '5185', '6389', 'n', 'w', '4913', '6947', '4157', 'Y', '4651', 'e', '2853', '6911', 'y', '7999', 'z', '2465', 'U', 'G', 8827, 4147, 7451, 9551, 'k', 'v', 'X', 'Z', 'u', 'U', 3309, 923, 1607], ['m', 6339, 'a', 6013, 'r', 7873, 6127, 'e', 'r', 'Q', 'W', 4033, 'L', 877, 9639, 3075, 5531, 'Q', 'a', 'c', 2835, 5517, 't', 'b', 'N', '8301', '2479', '2729', '4023', '4955', 'Q', 'Y', '2939', 'n', '2985', '5185', '6389', 'n', 'w', '4913', '6947', '4157', 'Y', '4651', 'e', '2853', '6911', 'y', '7999', 'z', '2465', 'U', 'a', 'A', 5649, 'B', 'v', 3625, 'B', 7769, 'B', 'Q', 'B', 5395, 4413, 4007, 3929, 'O', 'm', 661, 'c', 'j', 'P', 8563, 'o']