In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['e', 5523, 3717, 'G', 6331, 'n', 1215, 2967, 'y', 'H', 2389, 1923, 'I', 'z', 'g', 'c', 'H', 5801, 's', 'g', 4773, 'j', 'o', 7387, '7951', '753', '1747', 'c', '787', '7343', 'O', 'o', 'x', '8087', '4657', '969', 'U', '1795', 'z', '1257', 'D', '1393', 'x', 'C', 'n', 'O', 'S', '6365', 'M', 'T', 's', 'O', 'o', 9311, 'v', 543, 8241, 5807, 4505, 8273, 427, 1785, 'D', 665, 'f'], [8127, 4725, 'I', 'J', 'G', 5257, 5971, 5973, 2371, 'J', 'C', 1183, 6019, 3037, '7951', '753', '1747', 'c', '787', '7343', 'O', 'o', 'x', '8087', '4657', '969', 'U', '1795', 'z', '1257', 'D', '1393', 'x', 'C', 'n', 'O', 'S', '6365', 'x', 2687, 'y']