In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['t', 813, 1909, 5377, 873, 'M', 'm', 'L', '6049', 'P', 'j', 'H', 'i', 'z', '4811', '7945', 'O', '8043', 't', '3195', 'C', '9687', 'k', '6147', '5295', '6679', '9525', '1405', '8137', '9321', 'e', 'k', 'y', '837', 'n', 5007, 1485, 'k', 'R', 'M', 4221, 2215], ['b', 'S', 'E', 2255, 3661, 5407, 'o', 'c', 4971, 323, 'S', 1721, 3937, 3835, 'w', 'C', 'y', 'h', 9887, 2291, 4507, 6539, 4405, 'K', 685, 'm', 3905, 'M', 'm', 'L', '6049', 'P', 'j', 'H', 'i', 'z', '4811', '7945', 'O', '8043', 't', '3195', 'C', '9687', 'k', '6147', '5295', '6679', '9525', '1405', '8137', '9321', 'e', 'k', 'y', '837', 'N', 5069, 'Y', 8409, 3255, 3823, 'A', 5955, 7405, 851]