In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['p', 'C', 6777, 'P', 'd', 4619, 'l', '4333', '9491', 'V', '5745', 'P', '9255', '9439', '8461', 'D', 'L', 'w', 'R', 'U', 'C', 'G', 'm'], ['U', 5295, 'O', 'F', '4333', '9491', 'V', '5745', 'P', '9255', '9439', '8461', 'D', 'L', 'w', 'R', 'W', 'C', 'I', 'K', 5891]