In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[2667, 'C', 'm', 'l', 5575, 'f', 'I', 7401, 6113, 'l', 'd', 4063, 2889, 'Q', 'Y', 7947, 'N', 'F', 'C', 2537, 'R', 'F', 3237, 'o', 'H', 'Y', '9383', '4893', '7873', 'b', '3317', 'O', '7873', 'V', 'c', '6209', '2809', '8503', '7861', 'j', '5977', '1419', 'A', 'v', 'm', 'P', 'q', '3843', 'I', 'k', 1427, 'D', 'X', 8741, 6773, 3241, 'A', 'n', 'p', 'F', 2003, 5011, 8863, 5471, 'U', 'H', 'D', 51, 'n', 2597, 'H', 'J', 6851], ['a', 'P', 9073, 'M', 6949, 'p', 5479, 7679, 5743, 9993, 'i', 'P', 'T', 'f', 'b', 'o', 'o', 'H', 'Y', '9383', '4893', '7873', 'b', '3317', 'O', '7873', 'V', 'c', '6209', '2809', '8503', '7861', 'j', '5977', '1419', 'A', 'v', 'm', 'P', 'q', '3843', 'Q', 7467, 'e', 9477, 3237, 'g', 4025, 6895, 'e', 9657, 'F', 5233, 4841, 'Q', 'u']