In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['G', 5027, 'f', 'q', 'g', 8725, 6269, 'P', '3637', 'h', 'M', '9161', 'u', '715', 'E', '1953', 't', 'U', '1391', 'c', '6137', '7457', '9049', 'k', 'L', '3105', 'd', '3689', '6969', 'w', 'e', 'e', 'S', '2733', '313', '4121', '5753', 'x', 5691, 4989, 4571, 'V'], [7707, 'R', '3637', 'h', 'M', '9161', 'u', '715', 'E', '1953', 't', 'U', '1391', 'c', '6137', '7457', '9049', 'k', 'L', '3105', 'd', '3689', '6969', 'w', 'e', 'e', 'S', '2733', '313', '4121', '5753', 'F', 'K', 'u', 3395, 1493, 8813, 'r', 7555, 'i', 8511, 5631, 7797, 2977, 4553, 6723, 5811, 't', 'a']