In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[3399, 2751, 873, 'b', 'i', 6477, 6831, 1793, '1009', 'r', 'X', 'R', 'j', 's', '3711', 'g', 'v', 'A', '8355', 'w', 's', 'b', 5635, 'Q', 'h', 'G', 8601, 1915, 9627, 'm', 'x', 5533], [579, 6675, 'K', 'e', 'V', 'y', 1267, '1009', 'r', 'X', 'R', 'j', 's', '3711', 'g', 'v', 'A', '8355', 'w', 'A', 'd', 'T', 'Q', 8649, 'L', 3383]