In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[9611, 'g', 'E', 9245, 'X', 175, 2619, 'v', 'f', 'W', 'G', 'x', '4805', 'F', 'w', '521', 'c', '1609', 'H', '8607', 's', '7451', '9671', '2449', '1079', 'i', '9715', '5325', 'I', '2343', 'v', 'F', '1783', 'T', 'N', 'E', 9869, 3255, 7217, 7847, 7557, 7841, 9865, 'g', 'N', 2595, 1037, 4505, 6379, 'k', 4855], ['c', 'D', 'Y', 'g', 2431, 'q', 'C', 'x', '4805', 'F', 'w', '521', 'c', '1609', 'H', '8607', 's', '7451', '9671', '2449', '1079', 'i', '9715', '5325', 'I', '2343', 'v', 'F', '1783', 'T', 'E', 6327, 9217, 'U', 'v', 7673, 5885, 'y', 'v', 5141, 'L']