In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[7397, 4899, 'y', 'E', 3613, 'N', 8549, 'r', 'Q', 4455, 'N', 1585, 'O', 7965, 'I', '3601', 'W', '101', '9159', 's', 'x', 'V', 'n', '4571', '561', '1233', 'M', 'K', 'o', '8153', 'o', 'g', '5237', 'o', 'e', 99, 2947, 7239, 'm', 7697, 'l', 'g', 's'], ['C', 'M', 'N', 'f', 'd', 'I', 'e', 5513, 'h', 8589, '3601', 'W', '101', '9159', 's', 'x', 'V', 'n', '4571', '561', '1233', 'M', 'K', 'o', '8153', 'o', 'g', '5237', 'Z', 1797, 'L', 'R', 'Z', 'z']