In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[7291, 'O', 'K', 'v', 'q', 9877, 1171, 'E', 9833, 'e', 'u', 5655, 'A', 4251, 441, 9549, 'L', 3967, 'o', '7371', '7627', '3957', 't', 'i', 'x', '1069', 'D', '4263', 'd', 'v', 'P', '6033', '6623', '2909', 'u', '1659', 'y', 'B', 'X', '9915', 'p', 'q', 'c', '4953', '673', '2879', '7003', 'J', 'p', 'q', 8013, 'Y', 8027, 8913, 'B'], ['u', 1715, 2639, 'd', 'E', 'w', 'C', 6843, 'M', 849, 'n', 'J', 'u', 'l', 'f', 1121, 6437, 'y', 8829, 37, 67, 'G', '7371', '7627', '3957', 't', 'i', 'x', '1069', 'D', '4263', 'd', 'v', 'P', '6033', '6623', '2909', 'u', '1659', 'y', 'B', 'X', '9915', 'p', 'q', 'c', '4953', '673', '2879', '7003', 'q', 'S', 'a', 'N', 'H', 2353, 'z', 's', 5025, 867, 6655, 3963, 'b', 'r', 'V', 'k', 6743, 'U', 5541, 6635, 'o', 'U', 1663]