In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[7481, 'Z', 'g', 'R', 7829, 'T', 2965, 'R', '3583', 'y', '4071', 'Y', '3399', '3363', 'J', '7775', 'w', '7735', '2405', '4821', 'k', '5853', 'U', 'B', 9361, 'a', 'x', 4249, 's', 'b', 'B', 'q'], [1869, 2381, 8845, 1125, 'y', 'R', 3187, 2697, 6481, 3973, 'e', '3583', 'y', '4071', 'Y', '3399', '3363', 'J', '7775', 'w', '7735', '2405', '4821', 'k', '5853', 'l', 7459, 'd', 'B', 'H', 'a', 'h', 2049, 't', 239, 8891, 10009, 'I']