In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['p', 'H', 't', 5983, 'L', 'z', 'C', 'q', 2271, 6731, 2401, 8319, 3555, 'm', 5949, '6547', 'E', '45', 'y', '1897', 'b', '3981', '6639', 'k', '10013', '7977', 'P', 'C', 'u', '6391', 'e', 'k', 'H', 'p', '1647', '4087', '1407', 'o', '6883', '8983', 'J', 'B', 1945, 9301, 't', 'Z', 'S', 'V', 'c', 'W', 9355, 8975, 'D', 'Z', 7683, 'd', 9, 'u'], [6371, 'K', 'l', 5287, 'm', 'p', 6647, 'k', 'z', 7589, 'm', 8721, 8169, 1455, 'A', 9413, 'e', 3565, 787, '6547', 'E', '45', 'y', '1897', 'b', '3981', '6639', 'k', '10013', '7977', 'P', 'C', 'u', '6391', 'e', 'k', 'H', 'p', '1647', '4087', '1407', 'o', '6883', '8983', 'J', 'S', 'u', 3857, 'e', 8819, 'm', 4795, 7713, 3143, 1391, 1233, 7635, 'C', 7011, 4413, 2459, 'l', 'H', 'T', 'X']