In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[15, 6019, 1909, 9625, 8159, 'x', 6991, 1601, 9115, 6189, 'N', 'Q', 2997, '3789', '2687', '2493', 'O', '2289', 'e', '943', 'j', '4693', '9851', '9781', 'A', 'R', 'r', 'M', '3089', 'N', '9131', '8387', '5369', 'c', '9913', 'T', '873', 'N', 'q', 'Q', 633, 'F', 8691, 'i', 9415, 4443, 'W', 1033, 8405, 'w', 'n', 'A', 'a', 3507, 107], [7301, 9119, 'd', 1839, 'w', 9751, 7635, 1531, 3523, 'B', 'O', 7323, 415, '3789', '2687', '2493', 'O', '2289', 'e', '943', 'j', '4693', '9851', '9781', 'A', 'R', 'r', 'M', '3089', 'N', '9131', '8387', '5369', 'c', '9913', 'T', '873', 'G', 2119, 'C', 'F', 'i', 2697, 1557, 8109, 4375, 'e', 'u', 'C']