In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['b', 'e', 'm', 'g', 'B', 'j', 'C', 8357, 9609, 'O', 'p', 251, 6943, 'U', 4017, 5635, 'M', 5881, 'D', 5201, 'S', 8139, 6519, 8105, 'K', 'U', 7003, 'g', 'e', '5195', '6869', '8689', 'B', '6733', '2955', '163', '7957', '9893', 'u', 'v', 'H', '5233', 'A', '1695', 'y', '2593', '1459', '727', '4823', 'y', 's', '9853', 'D', '7241', '5621', 'V', 'Q', 'X', 'T', 'e', 4237, 's', 2907, 2519, 'Z', 'M', 'W', 2259, 'N', 'm', 'w', 'E', 4887], [1873, 4509, 'o', 5931, 'R', 'z', 7239, 5191, 4665, 'V', 7811, 7927, 8885, 2663, '5195', '6869', '8689', 'B', '6733', '2955', '163', '7957', '9893', 'u', 'v', 'H', '5233', 'A', '1695', 'y', '2593', '1459', '727', '4823', 'y', 's', '9853', 'D', '7241', '5621', 'V', 'Q', 'X', 'n', 'g', 'p', 1691, 'c', 'D', 'Q', 'l', 1229, 4781, 'P', 8209]