In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[7733, 5827, 'u', 5969, 'Y', 'P', 'P', 'H', 'l', 'k', '8041', 'P', '4145', '7567', '4779', '5417', '2357', '3431', '2289', 'D', '6327', 'G', 'c', '7785', 'b', 'K', 'Y'], ['p', 'h', 'q', 7913, 2435, 5593, 4615, 2027, 'H', 'l', 'k', '8041', 'P', '4145', '7567', '4779', '5417', '2357', '3431', '2289', 'D', '6327', 'G', 'c', '7785', 'K', 4301, 2059, 1095, 'A', 'S', 'V', 'U', 2129]