In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['N', 3641, 'k', 'N', 'R', 'K', 9531, 'E', 'B', 'U', 'i', '3493', 'q', 'l', 'x', '4929', 'r', '6941', 'Y', 'P', 'q', '6313', '67', '6755', 'l', '4089', '6601', 'F', '6707', 'C', '8845', '1015', '9991', 'C', '2347', '667', 's', 'f', 8063, 'r', 'B', 'Q', 'J', 1045, 8073, 'E', 'B', 6583, 'n', 2393, 3645, 'C', 'v', 2671, 'x', 9617, 'n'], [5133, 8609, 'b', '3493', 'q', 'l', 'x', '4929', 'r', '6941', 'Y', 'P', 'q', '6313', '67', '6755', 'l', '4089', '6601', 'F', '6707', 'C', '8845', '1015', '9991', 'C', '2347', '667', 'P', 559, 2441, 'f', 813, 7861, 'Q', 'L', 8537, 7227, 'L', 'm', 155, 6055, 8235, 'X', 'K', 7529]