In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['y', 'U', 'a', 'q', 'v', 5001, 'O', 7843, 'r', 'a', 2797, 'n', 'J', 9585, '9963', '4747', 'w', '2537', 'k', 'Y', '7867', 'y', 'j', '1209', '7219', '5505', '5525', '3203', 'Z', 'E', 'y', '2925', 'e', 'x', '7483', '9927', '2235', 'd', 'A', 'D', 'Y', 5367, 'u', 9599, 'M', 'h', 4841, 'O', 'S'], ['I', 5803, 3389, 'C', 'X', 'U', 'm', 3585, 1243, 's', 'I', 1051, 'O', 6581, 'l', 'Z', 1571, 'O', '9963', '4747', 'w', '2537', 'k', 'Y', '7867', 'y', 'j', '1209', '7219', '5505', '5525', '3203', 'Z', 'E', 'y', '2925', 'e', 'x', '7483', '9927', '2235', 'd', 'A', 'D', 'L', 3421, 'r', 2407, 'o', 'C', 'p', 'r', 'H', 6173, 'T', 901, 'n', 'O', 'q', 'o', 7079, 'r', 'n', 1353, 'v', 1311, 6547, 2685, 8457, 7415]