In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['k', 'y', 'b', 'e', 'n', 'R', 753, 8955, 'q', '575', '397', '6153', 't', 'I', 'Q', '797', '385', 'U', '9417', 'i', '1729', '8107', '3581', 'n', '9275', '3759', 'l', 101], ['c', 185, 8551, 8873, 't', 807, 'u', 'M', 'a', 5323, 'm', 731, 'Q', 9285, 'l', 2805, 2011, 'q', '575', '397', '6153', 't', 'I', 'Q', '797', '385', 'U', '9417', 'i', '1729', '8107', '3581', 'n', '9275', '3759', 'd', 7909, 3385, 3997]