In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[9693, 9387, 'l', 4331, 'I', 2539, 7209, 'b', 4941, 5321, 'h', 1805, 'x', 'w', '8981', 'w', '583', '8569', 'I', 'h', '7671', 'T', 'l', '2373', 'R', '2943', 'y', '2327', '6855', '5515', 'v', '4257', 'N', '1863', '7843', '7193', '829', 'Q', 8253, 'S', 'O', 1047, 2631, 9593, 'C', 'Z', 'p', 8669, 1755, 'd', 199, 1465, 'I', 'c'], ['R', 'w', 3419, 'm', 4097, 'Z', 3453, 'o', 6099, 'k', 419, 6245, 'A', 'Z', 'O', 1599, 'P', 'x', 'j', 'i', 'U', 5921, 'X', 'q', 'b', 'x', 'w', '8981', 'w', '583', '8569', 'I', 'h', '7671', 'T', 'l', '2373', 'R', '2943', 'y', '2327', '6855', '5515', 'v', '4257', 'N', '1863', '7843', '7193', '829', 'r', 'U']