In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['G', 8593, 6069, 5677, 'n', 'G', 't', 'n', 'Z', 'E', 'U', 'c', 'l', 'D', '2611', '39', 'D', 'W', '689', 'D', '2631', 'R', 'H', 'U', '2143', 'L', 6603, 'Q'], ['B', 'K', 6633, 'l', 'D', '2611', '39', 'D', 'W', '689', 'D', '2631', 'R', 'H', 'U', '2143', 't', 'U', 8995, 9181, 1243, 'p']