In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['W', 'c', 'I', 755, 5879, 'n', '4151', '6089', 'a', '7927', '7115', 'F', 'y', '2151', 'B', '201', 'Z', 'U', 'h', 9027, 3439, 'j', 4301, 9437, 1759, 997, 'K'], [8715, 8627, 'w', 3733, 'K', 4667, '4151', '6089', 'a', '7927', '7115', 'F', 'y', '2151', 'B', '201', 'Z', 'a', 8119, 'B']