In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[119, 'Q', 'f', 8443, 8307, 749, 1441, 'x', 'R', 'D', '1691', '8171', 'U', 'Q', '6777', '3515', '9483', '1881', 'G', 'n', 'f', '3431', 'v', 'D', 'K', 'P', 'C', 'o', 'j', 6245, 3877, 'm', 'K', 3613], ['A', 'a', 3541, 'x', 'R', 'D', '1691', '8171', 'U', 'Q', '6777', '3515', '9483', '1881', 'G', 'n', 'f', '3431', 'v', 'D', 'e', 1485, 169, 7153, 8981, 6187, 1143, 2633, 't', 'e', 'D', 3213, 9983]