In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['B', 'W', 7625, 'E', 'b', 'y', 'C', 'i', 9821, 115, 'P', 'i', '699', 'd', 'C', '1691', 'P', 'o', '6723', '4455', '2115', 'i', 'x', 'I', 'D', '7667', 'F', '4299', '2769', '3009', 'x', 'v', 4853, 5361, 'X', 113, 'n', 4383, 'n', 1861, 'Y', 6097, 993, 'J', 'v', 4295], ['F', 'N', 4451, 'i', 'a', 2725, 5533, '699', 'd', 'C', '1691', 'P', 'o', '6723', '4455', '2115', 'i', 'x', 'I', 'D', '7667', 'F', '4299', '2769', '3009', 'N', 1817, 3515, 4139, 3527, 6485, 'g', 8375, 6047, 4329, 7427, 'O', 't', 'E', 'z']