In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[147, 'y', 9855, 'V', '7047', 'N', '5899', 'P', '9343', 'D', '7927', 'i', '641', 'k', '3305', '5205', 'O', '1385', 'H', '5697', '7009', '1389', 'l', '9211', '5705', '5451', '1867', '3597', 'N', '5625', 'C', '1429', 'm', 'P', 'c', 8803, 7429, 's', 465, 'U', 2021, 5057, 'Y', 'z', 3181, 'B', 'I', 'C', 'l', 'S', 'y', 1197, 'v', 7495, 9083, 1973, 'a', 'M'], ['I', 889, '7047', 'N', '5899', 'P', '9343', 'D', '7927', 'i', '641', 'k', '3305', '5205', 'O', '1385', 'H', '5697', '7009', '1389', 'l', '9211', '5705', '5451', '1867', '3597', 'N', '5625', 'C', '1429', 'm', 'P', 'v', 'B', 'a', 'M', 'N', 9737, 'h', 'M', 4691, 6479, 'x', 2783, 's']