In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[2945, 6951, 2771, 'k', 'G', '7377', 'd', 'a', 'p', 'J', 'c', 'R', '6641', 'a', '2235', '3033', '3189', '7299', 'h', 'T', '5111', 'k', 'd', 4197, 'j', 'p', 'z', 1911, 'w', 6663, 7993, 5973, 3193, 7387, 'h', 'e', 8663, 2715], ['U', 'a', 'f', 7179, 7859, 'C', 6081, 2069, 3459, 'm', 'w', 'k', 'q', 'k', 'G', '7377', 'd', 'a', 'p', 'J', 'c', 'R', '6641', 'a', '2235', '3033', '3189', '7299', 'h', 'T', '5111', 'k', 'e', 'v', 'f', 5943, 8771, 'K', 'i', 'c', 'x', 7745, 'F', 'x', 3855, 'S', 5113, 1205]