In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['J', 6383, 'O', 'q', 'd', '2521', '4719', 'k', 'e', '6353', '2499', '3173', 'G', 'a', '9425', 'i', 'C', 'o', 'E', 4077, 6379, 'i', 'd', 'k', 'R', 5973, 4105, 1713], [9721, 'B', 'C', 3117, 'O', 'q', 'd', '2521', '4719', 'k', 'e', '6353', '2499', '3173', 'G', 'a', '9425', 'i', 'H', 7199, 6025, 5233]