In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['V', 9555, 6335, 'u', '3651', 'p', 's', 'a', '8423', 'G', '1549', 'L', '929', '8953', '4135', 'B', 'U', 'R', '3229', '7521', 'Q', 'v', 'a', 4403, 3013, 'Q', 'j', 'M', 4753], [6407, 7387, 'g', 5001, 7865, 'b', 't', 5317, 2175, 'r', 'r', 'E', 7921, 'I', 'D', 3849, 'W', 'A', 'u', '3651', 'p', 's', 'a', '8423', 'G', '1549', 'L', '929', '8953', '4135', 'B', 'U', 'R', '3229', '7521', 'Q', 'v', 'F', 'q']