In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['c', 'N', 'X', 'x', 'X', 'U', 'R', 'x', 7491, 9603, 'Q', 1265, 'X', 'h', '6855', 'a', '2403', '7025', 'U', '4851', 'E', '1381', '4129', '4507', 'w', '5229', '1143', 'P', '6403', 'V', 'N', 'b', 'u', 5451, 7077, 2767, 'z', 'y'], [4543, 'C', 45, 'd', 'h', '6855', 'a', '2403', '7025', 'U', '4851', 'E', '1381', '4129', '4507', 'w', '5229', '1143', 'P', '6403', 'E', 'Y', 'x', 3443, 5495, 'd', 'L', 383, 'G', 'T', 2199, 5049, 'V']