In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['W', 8373, '1337', '2393', '2087', 'J', 'b', 'D', 'b'], [801, 1091, 505, 3675, 'j', '1337', '2393', '2087', 'J', 'b', 'u', 9079, 'K', 3665]