In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['N', 867, 'F', 4453, 5901, 'Y', 'X', '439', '6067', 'c', 'K', 'v', 'T', '911', '3755', '5529', '5445', 'r', 'O', 7047, 'k', 'm'], [5767, 927, 9585, 'r', 'y', 'I', 2547, 'p', 107, 'X', '439', '6067', 'c', 'K', 'v', 'T', '911', '3755', '5529', '5445', 'r', 'l', 'p', 5855, 's', 8397, 'a', 6135]