In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[879, 'S', 4735, 6487, 'X', '7883', '7419', 'C', 'q', '2487', 'Y', 'Q', 'o', 'N', 'e', '8083', 'u', '5205', 'Q', 'x', '8687', 'u', 'v', '9759', '4455', 'Z', 7209, 'f', 'N', 9583, 6957, 3633, 2837, 's', 'Q', 3849, 'q', 9049, 4817, 'i', 6443], ['o', 2187, 'q', 'D', 'j', 'd', 'i', 'V', 8031, 5527, 'w', 'B', 'z', 'N', 7331, 'k', 'I', 4155, 'v', 1119, 'X', '7883', '7419', 'C', 'q', '2487', 'Y', 'Q', 'o', 'N', 'e', '8083', 'u', '5205', 'Q', 'x', '8687', 'u', 'v', '9759', '4455', 'U', 'F', 5223, 'y', 'S', 'C', 3781, 2655, 871, 'z', 5179, 'u', 'L', 4695, 'h', 709, 'p', 5443, 'b', 4067]