In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['A', 'l', 4503, 'F', '853', 'v', 'Y', '7109', 'z', 'k', 'x', '4453', '1147', '1717', '6471', 'v', '329', 'j', '6799', '6777', '8327', '4627', '10015', '9949', '6179', 'h', '4591', '4007', '9483', '707', '7755', '8015', 'd', 8487, 'b'], ['t', 1709, 7113, 5207, 5857, 3491, 2213, 9077, 5447, 'V', 'N', 8963, 6849, 9537, 1317, 3213, 3703, 'z', 6505, 8529, 1759, 'P', 4749, 'm', '853', 'v', 'Y', '7109', 'z', 'k', 'x', '4453', '1147', '1717', '6471', 'v', '329', 'j', '6799', '6777', '8327', '4627', '10015', '9949', '6179', 'h', '4591', '4007', '9483', '707', '7755', '8015', 'q', 'Y', 2047, 6997, 'I', 't', 'k', 6171, 5553, 3109, 'c']