In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['l', 'H', 'V', 'Q', 'z', 4637, 'J', 'K', 4561, 'P', '7313', 'G', 'A', '7283', '7949', '3133', 'M', '2349', '8475', '6667', '4725', 'z', 'M', 7961, 's', 4565, 5657, 'v', 6845], ['b', 'w', 'f', 'b', 6539, '7313', 'G', 'A', '7283', '7949', '3133', 'M', '2349', '8475', '6667', '4725', 2051, 'H', 5695, 7673, 7541, 'W', 5885, 2233, 6769, 'b']