In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[3645, 'a', 'r', 'H', 'F', 5289, 'Q', 'S', 'l', 'A', 'i', 'N', 4209, 'Y', 'v', 'l', 'f', 'B', 9611, 8025, 'x', 8141, 3323, 9387, 1457, 2157, 'v', '6997', '1987', '9305', 'c', '9391', 'W', 'q', 'H', 'O', '9283', '5671', '9549', 'M', '881', '6859', '3761', '7565', '2293', '1701', 'p', 'q', 'u', '8057', 'k', '1721', '4713', 'y', 'g', 'b', 5905, 'H', 'Y', 5059, 745, 'd', 1313, 'U', 7783, 'R', 'B'], ['q', 'N', 10023, 'V', 9257, 'y', 563, 'b', 8447, 2529, 'f', 4739, 9195, 'O', 1099, 4353, 'P', 821, 8169, 'S', 'r', 'b', 'v', '6997', '1987', '9305', 'c', '9391', 'W', 'q', 'H', 'O', '9283', '5671', '9549', 'M', '881', '6859', '3761', '7565', '2293', '1701', 'p', 'q', 'u', '8057', 'k', '1721', '4713', 'y', 'g', 'e', 4393, 'j', 'J', 'A', 'I', 'n', 181, 3731, 5323, 3189, 9859, 'Q', 'V', 'E', 2413, 733, 'p', 'U', 3339, 8789, 'd', 4205, 5453, 'I', 1359, 891, 4269]