In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[9491, 7417, 'X', 8055, 'T', 'l', 'Z', '861', '3823', '8901', '9377', '697', '5467', 'H', 'e', 'w', 'z'], ['i', 'F', 'Z', '861', '3823', '8901', '9377', '697', '5467', 'k', 'W', 15, 3537, 'N', 1283, 'A']