In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[3613, 'a', 'X', 'A', 's', 'a', 3957, 'q', 'x', 4235, 3993, 5663, 'S', '5417', 'N', 'W', 'H', '5751', 'a', '8603', 'I', '7471', '309', 'B', 'd', '3369', '6865', '649', 'F', 'Y', 8821, 881, 'n', 5723, 'H', 'O', 's', 5259, 'b', 'e', 5773, 4645, 'F', 'C', 'l'], ['F', 139, 5031, 3285, 'r', 7887, 1463, 'v', 'Y', 4313, 'N', 'k', 9277, 1165, 'S', '5417', 'N', 'W', 'H', '5751', 'a', '8603', 'I', '7471', '309', 'B', 'd', '3369', '6865', '649', 'F', 't', 'b', 9429, 'Z', 3509, 2675, 5257, 8519, 'A', 'g', 'i', 5479, 'P', 4469]