In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['Z', 't', 8725, 'H', 6417, 7935, 'r', '831', 'c', '8509', '8765', '847', '9425', '3691', 'h', 'O', 'j', 'G'], [1931, 'E', 'Y', 9491, '831', 'c', '8509', '8765', '847', '9425', '3691', 'M', 8629, 'z', 'j', 3887]