In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6773, 'l', 'n', 'H', 'I', 'E', 'z', 'l', 'K', 'E', 'i', 'A', 7955, 6821, 3357, 157, 3999, 'n', 'I', 'Y', 'g', 1157, 1367, '8935', '9121', 'z', '3977', 'U', 'c', '5685', 'q', 'I', '1549', 'L', 'v', 'F', 'x', '9095', '8561', '3957', '939', '2671', 'C', '5631', '8367', 'S', '2697', '931', 'U', 'j', '447', 'd', 'g', 'l', 'f', 509, 2391, 3627, 5445, 'p', 8481, 9201], ['p', 'C', 'l', 7511, 5119, 'o', 7887, 8729, 'C', 'r', 5051, 5415, 5029, 'd', 8677, 6777, 'f', 9523, 981, 'h', 't', 8713, '8935', '9121', 'z', '3977', 'U', 'c', '5685', 'q', 'I', '1549', 'L', 'v', 'F', 'x', '9095', '8561', '3957', '939', '2671', 'C', '5631', '8367', 'S', '2697', '931', 'U', 'j', '447', 'P', 'O', 4261, 463, 'Y', 'q', 8743, 'U', 8293, 1903, 7827, 'c', 8317, 't']