In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['s', 'Z', 'Y', 9697, 'i', 3465, 3963, '3173', 'b', '9041', '6719', 'E', '4643', 'D', '2283', 'X', 5341, 'K', 'Y', 'I', 'y', 'E'], ['D', 'k', 8951, 8767, 8883, 1587, 'S', '3173', 'b', '9041', '6719', 'E', '4643', 'D', '2283', 'b', 3323, 4701, 6551, 'T', 'G', 3933, 2275]