In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['Z', 2635, '6111', 'k', '985', 'z', 'm', 'g', 'n', 'i'], ['a', 'I', 'H', '6111', 'k', '985', 'z', 's', 133, 'Y', 'z']