In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['T', 3589, 3751, '1207', 'p', '503', 'x', 'o', '5377', 'j', '155', 'p', 'z', 6289, 't'], [6541, 'l', 9073, 8867, '1207', 'p', '503', 'x', 'o', '5377', 'j', '155', 'k', 4791]