In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['B', 8577, 'O', 'f', 1637, 9683, 'f', '8595', '8755', 'p', 's', 'I', 'j', 'w', 'k', 'k', 'r', 'r', 'W'], [3419, 'd', 'f', '8595', '8755', 'p', 's', 'I', 'j', 'w', 'k', 'k', 'r', 'N', 183, 6925, 'z', 'h', 'l', 'a']