In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[1519, 'G', 7315, '10013', '7377', '1459', '3401', 'u', 'Z', '9807', 'n', '2551', 'D', '8295', 'k', 'x', 355, 'V'], [1645, 'j', 'D', 'H', '10013', '7377', '1459', '3401', 'u', 'Z', '9807', 'n', '2551', 'D', '8295', 'H', 'O']