In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['h', 3301, '629', 'C', '1369', 'p', 't', 'v', '9861', 'i', 5095, 'R', 8155, 2549, 3507, 'u'], ['k', 6277, 'z', 'r', 8365, 9477, '629', 'C', '1369', 'p', 't', 'v', '9861', 'O', 'b']