In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['I', 'p', 9233, 3401, '5391', '8429', 'Z', '1451', 'z', '2365', '4443', '9543', 'd', '2053', 't', 'Y', 'U'], [6207, 'D', 'p', 3947, 5487, 1047, 'Z', 5055, 9735, 'D', '5391', '8429', 'Z', '1451', 'z', '2365', '4443', '9543', 'd', '2053', 't', 'e', 'R', 'i', 8589, 5947, 1151]