In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[2123, 'K', 'U', 'U', 'o', '9899', '9889', 'J', '7337', '4115', 'm', 'L', '427', 'P', '7179', 'x', 'X', '6017', 'X', '9951', '2317', 'Q', '5995', 'p', 't', 'Y', '5285', '7643', '7797', '2341', 'C', 8275, 'u', 'u', 3885, 8695, 'D', 'D'], [1269, 2525, 3703, 2717, 3417, 6093, 'h', 'o', '9899', '9889', 'J', '7337', '4115', 'm', 'L', '427', 'P', '7179', 'x', 'X', '6017', 'X', '9951', '2317', 'Q', '5995', 'p', 't', 'Y', '5285', '7643', '7797', '2341', 'R', 3083, 5241, 'P', 'A', 3113, 363, 3561, 821, 'p', 4783, 2045, 'F', 8307, 7129]