In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['b', 'W', 'e', 'P', 'l', 5389, 'D', 9423, 'f', 7871, 'a', 'j', 'd', 1701, 'v', 275, 2733, 'J', 7911, 8651, '2803', '3395', 't', 's', 'G', 'a', 'o', '8221', 'M', 'A', 'I', '8403', 'X', 'x', 'w', '4827', '2117', '5947', 'C', 'T', 'c', 'k', 'l', 2221, 'N', 'N', 9299, 7297, 7993], [8613, 9827, 'l', 'u', 'p', 5161, 8575, 1561, 'o', 'w', 9759, 775, 'f', 6179, 'e', 'g', 9835, 627, '2803', '3395', 't', 's', 'G', 'a', 'o', '8221', 'M', 'A', 'I', '8403', 'X', 'x', 'w', '4827', '2117', '5947', 'C', 'T', 'k', 3131, 6815]