In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[7153, 2439, 2547, 6541, 'Y', 4237, 'c', '7873', '2375', 'K', '9299', 'h', '747', '8767', '4845', '8435', 'k', '9579', '9939', '3465', 'U', 'X', 'j', '5349', 'Z', 'f', 'l', '4965', '4099', 'j', 'u', 'j', 'x', 4245, 4007, 'o', 'A', 'k', 'e', 'R', 815, 5481, 'H', 717, 2409, 'k', 'y', 399], [5907, 'c', 857, 'T', 'j', 4413, 3643, 'A', 3161, 8181, 5979, 'A', 'B', 6559, 'o', '7873', '2375', 'K', '9299', 'h', '747', '8767', '4845', '8435', 'k', '9579', '9939', '3465', 'U', 'X', 'j', '5349', 'Z', 'f', 'l', '4965', '4099', 'j', 'u', 'i', 8097, 'O', 1829, 'b', 3, 4295, 'b', 'z', 'E', 9083, 'n', 'O', 8673, 8813, 't', 89, 'Z', 9677, 'U']