In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['u', 3221, 'j', 6593, 'F', 7739, 7063, 6619, 3253, 'q', 'S', '9857', '6727', '4977', 'k', '505', 'b', 'N', 'B', 'X', '5795', 'N', 'N', 'W', '811', 'g', '843', 'v', 9413, 1253, 'c', 'n', 'z'], ['j', 'b', 'y', 9577, 3395, 'y', 5993, 3109, 8115, 'Y', 2515, 'N', 'Y', '9857', '6727', '4977', 'k', '505', 'b', 'N', 'B', 'X', '5795', 'N', 'N', 'W', '811', 'g', '843', 'c', 775, 'W', 9839, 3057, 2535, 9615, 'I', 9103, 5309, 'J', 4243, 'u', 'C', 6547, 8809]