In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['u', 7923, 'z', 'I', '8221', 'Z', 'w', 'i', 'l', '6609', '9109', '975', '8517', 'q', 'o', 'A', 8571, 7139, 'Z', 'P'], [2945, 'c', 411, 'I', 'F', 'I', 'z', 'I', '8221', 'Z', 'w', 'i', 'l', '6609', '9109', '975', '8517', 'p', 'd', 4187, 't', 2701, 3385]