In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.

['C', 411, 'y', 465, 8405, 'D', 'W', '9797', 'P', '489', '1061', '271', '9261', 'Q', 'D', 'I', '4947', 'a', 7739, 8541, 's', 'L', 'p', 'G', 4369, 'Y', 'h', 8359], [3395, 4521, 'U', 'L', 8877, 1481, 9453, 'k', 'z', 7103, 'Z', 'W', '9797', 'P', '489', '1061', '271', '9261', 'Q', 'D', 'I', '4947', 'p', 8835, 6345]
W, 9797, P, 489, 1061, 271, 9261, Q, D, I, 4947