In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[4717, 'J', 'B', 'f', 'a', 9035, '3041', '491', '3395', '3117', '4793', '4305', 'c', 'F', 5099], ['Q', 3557, 'y', 2689, '3041', '491', '3395', '3117', '4793', '4305', 'c', 'k', 8835, 'C', 8979]