In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['y', 'b', 'P', 'O', 5497, 4481, 4195, 4057, 3229, 'V', 8995, 5235, 'x', 4217, 2215, 3311, 1649, 'i', 1251, 1741, 7429, 'K', 'v', '5841', '7405', '2629', '2895', 'O', '3379', 's', 'L', '141', 'u', 'k', 'R', 'u', '11', 'z', '5087', 'P', '7119', 'G', 'y', 'L', 'Y', 'H', 'f', 'n', '1219', 'n', 543, 3555, 2099, 9005, 1049, 6761, 7577, 'I', 'b', 'F', 'L', 'N', 'r', 9165, 6419, 9569, 't'], ['n', 9403, 'X', 9479, '5841', '7405', '2629', '2895', 'O', '3379', 's', 'L', '141', 'u', 'k', 'R', 'u', '11', 'z', '5087', 'P', '7119', 'G', 'y', 'L', 'Y', 'H', 'f', 'n', '1219', 'a', 'Q', 2273]