In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6733, 'F', 'd', 'W', 3785, 9347, 6601, '3303', 'a', 'z', 'E', 'H', 'n', '2853', '3267', '2661', 'G', 'E'], ['N', 'd', '3303', 'a', 'z', 'E', 'H', 'n', '2853', '3267', '2661', 'B', 'B', 6521, 1933, 1485, 753]