In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['Y', 'V', 'A', 4821, 5537, 'Q', 8537, '4369', '9797', '5607', 'U', '6625', 'e', '3979', '2821', '4041', 'j', '6585', 'f', 'E', 't', 'v', 'I', '1827', 'R', 'R', '47', 'K', 'r', 7153, 'H', 'A', 7885, 'r', 'T', 2553, 'N', 8399], ['A', 9157, 9507, 'v', 8651, 10007, 4927, 'g', 8025, 'S', 115, 6971, 'C', 4851, 8607, 2955, 'd', 1453, 7823, '4369', '9797', '5607', 'U', '6625', 'e', '3979', '2821', '4041', 'j', '6585', 'f', 'E', 't', 'v', 'I', '1827', 'R', 'R', '47', 'r', 'W']