In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['f', 'U', 5759, 'p', 'n', 'z', 'y', 'l', '4513', '5205', 'w', 'B', 'S', 9487, 'k'], ['m', 'a', 'z', 'y', 'l', '4513', '5205', 'N', 'L', 8553, 'I', 'k']