In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['K', 2741, 6215, 1683, 3683, '9819', '895', '6503', '7241', '385', 'N', 'Y', 't', 5813], [9631, 'Z', 'v', 'j', 'r', '9819', '895', '6503', '7241', '385', 'j', 'U', 'y', 5637]