In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['y', 'a', 'W', 'P', 901, 1551, 9937, 'x', 'F', '461', 'y', 'g', 'n', '2725', '6639', '8283', '2931', '8331', 'K', '9043', 'T', 'u', '1595', 'r', '7723', '1627', '6961', '3641', '6585', 'q', '5901', 'K', 'U', 'L', 'x', 'T', 'D', 4583, 4339, 's', 7703, 'h', 'o', 'a'], ['p', 'h', 'N', 'Y', 'h', 9039, 2937, 'r', 'm', 'c', 'y', 941, 2935, 6283, 3245, 3563, 315, 'o', '461', 'y', 'g', 'n', '2725', '6639', '8283', '2931', '8331', 'K', '9043', 'T', 'u', '1595', 'r', '7723', '1627', '6961', '3641', '6585', 'q', '5901', 'K', 'N', 'h', 'H', 7905, 3745, 'N', 'O', 8431, 'u', 8541, 4817, 5583, 'I', 'f', 5955, 'U', 1853, 'k', 'y', 'V', 6127]