In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[9995, 9607, 'y', 1093, 8737, 'm', 'P', 879, 1455, 209, 'p', '8707', 'P', '9315', 'd', 'G', '2507', '6275', 'I', 'P', '3155', '7259', 'A', 'O', 'C', 'l', '71', 'k', '3737', '1551', '6231', '3335', 'F', 'r', 'b', '5523', '3207', 'U', 'r', 's', 8589, 677, 'r', 3707, 'P', 'N', 2427, 'O', 4435, 8867, 2917, 9547, 'p'], [8511, 'V', 1955, 'i', 'f', 'V', 'V', 2789, 'Y', 'j', 'x', 9369, 3551, 'Q', 1773, 8015, 'C', 'K', 'B', 'S', 'X', 'p', '8707', 'P', '9315', 'd', 'G', '2507', '6275', 'I', 'P', '3155', '7259', 'A', 'O', 'C', 'l', '71', 'k', '3737', '1551', '6231', '3335', 'F', 'r', 'b', '5523', '3207', 'U', 'r', 'Z', 5247, 'W', 8559, 31, 'F', 'p', 2269, 'O', 7707, 'F', 'D', 'R', 'N', 3231, 6959, 9261, 5791, 6313, 'k', 9093, 4203, 8251, 63, 2487, 'y']