In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['U', 6679, 8071, 'k', 3983, '6695', 'T', 's', '3021', '7759', 'G', '965', 'c', 'E', '1437', '4117', '6391', '4789', 'f', '4799', 'Y', 'b', 'j', 'X', 'O', 'a', 'z', 8719, 5759, 'o', 'F', 1741, 7045, 2451], ['n', 'V', 8015, '6695', 'T', 's', '3021', '7759', 'G', '965', 'c', 'E', '1437', '4117', '6391', '4789', 'f', '4799', 'Y', 'b', 'j', 'C', 6179, 7635, 'W', 'z', 'J', 5243, 1969, 'B', 'h', 4807, 2743, 9585, 'W', 'H']