In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[1569, 'p', 'k', 977, 3201, 1099, 6699, 2733, 5325, 'p', 6771, 'Y', 3869, 8487, 2667, 'X', 'u', 'U', 'p', 8663, 9731, 3891, 4279, 'a', '9069', '2745', 'q', '2379', 'p', 'N', 'n', 'Z', '2491', '6299', 'h', 's', 'd', 'k', 'B', 'B', 'I', 'r', 'O', '4325', 'j', 'p', 'H', '129', '4245', '5093', '1031', 'V', 'j', 6643, 'j', 4625, 7757, 'R', 4755, 'x', 'x'], ['O', 5393, 'v', 't', 'a', 851, 'd', 'y', 'S', 'n', 8973, 2357, 821, 'z', 197, 8147, 5393, 3731, 'b', 'm', 9539, 5709, 2689, 2637, 6845, 't', 'F', 1087, '9069', '2745', 'q', '2379', 'p', 'N', 'n', 'Z', '2491', '6299', 'h', 's', 'd', 'k', 'B', 'B', 'I', 'r', 'O', '4325', 'j', 'p', 'H', '129', '4245', '5093', '1031', 'V', 'Q', 'k', 1121, 'Y', 'j', 'm', 'V', 315, 2499, 9981, 6821, 4027, 5831, 'd', 'm', 'k', 817, 'T', 3609, 'k', 9307, 'H', 2883, 'N', 'f']