In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['N', 'k', 5273, 5213, 'M', 'f', 4539, 'T', 5605, '3687', '5323', '3869', '6033', 'o', '6973', 'R', 'L', '8715', 'F', 't', 'K', 'M', 'K', 9155, 7535, 'C', 'p', 4701], [3487, 's', 6915, 4661, '3687', '5323', '3869', '6033', 'o', '6973', 'R', 'L', '8715', 'F', 't', 'r', 'o', 'F', 'j', 't']