In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['N', 399, 'v', 8723, 5709, 443, 489, 5973, 169, 'T', '3469', '4315', 'O', '5711', 'q', 'E', 'D', '7869', '8577', 'g', 'k', '1793', '7867', '7997', 'L', 'S', 'p', '9963', 'l', 'v', 'I', 5519], [2779, 'q', 'T', 'n', 'F', 'B', 'Q', 'C', '3469', '4315', 'O', '5711', 'q', 'E', 'D', '7869', '8577', 'g', 'k', '1793', '7867', '7997', 'L', 'S', 'p', '9963', 'd', 1527, 9537, 6975, 'A', 9203, 5363, 'v', 's', 7763, 1817, 4085, 'a', 'F', 'q']