In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[4307, 3255, 6295, 'y', 8259, 'V', 'R', 1649, 'C', 'K', '1909', 'R', 'B', 'C', '8327', '3413', '5717', 't', '9459', '4121', 'U', '1837', '4413', '5243', 's', 'b', 3657, 1015, 5887, 1875, 6247], [5415, 9043, 'A', 'O', 8451, 4937, 'J', 5643, 6221, 8445, 4543, 'g', 'M', '1909', 'R', 'B', 'C', '8327', '3413', '5717', 't', '9459', '4121', 'U', '1837', '4413', '5243', 's', 'P', 'S', 9887, 9051, 'L', 'Z', 'H', 'J', 6331, 'T', 'O', 95, 2511, 7831, 9223]