In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[8271, 'H', 'n', 1303, 'P', 'Z', '8927', 'S', 'Z', 'e', '3463', '5487', 'w', 'H', '1071', 'q', '7193', '2751', '1963', 'I', 'H', 'F', '6399', '1589', '1063', 'T', '9211', 'w', '9069', '5757', '2431', 'G', 'z', 'H', 'Z', 'R', 'Z', 17], [6877, 4677, 'A', 623, 'g', 151, 'u', 5045, 1867, 'E', 'M', 1153, 237, 4623, 4963, 'B', 'M', 8311, 6637, 'P', 'Z', '8927', 'S', 'Z', 'e', '3463', '5487', 'w', 'H', '1071', 'q', '7193', '2751', '1963', 'I', 'H', 'F', '6399', '1589', '1063', 'T', '9211', 'w', '9069', '5757', '2431', 'G', 'd', 4251, 'F', 'O', 'J', 4171, 7565, 'F', 9551, 4139]