In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[9131, 5645, 'W', 'N', 'Y', 'e', 6985, 'I', 7285, 8693, '1629', 'q', 'P', 't', '6793', '6671', '1721', '4855', '3131', 'k', '4943', '2949', '2879', 'w', '1209', 'N', 'R', 'u', 'V', 'L', '3595', 'p', 'a', 9265, 539, 863, 'y', 9673, 2675, 4693, 'n', 'V', 4491, 'p', 'P', 6965, 9279], ['M', 5645, 'c', 4807, 'v', 'o', 9721, 'J', '1629', 'q', 'P', 't', '6793', '6671', '1721', '4855', '3131', 'k', '4943', '2949', '2879', 'w', '1209', 'N', 'R', 'u', 'V', 'L', '3595', 'M', 5427, 'u', 'x', 'q', 3017, 1675, 4327, 'h', 7675, 7371, 'j', 'C', 'Y', 'E', 'N', 4829, 'd']