In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[9821, 'B', 6085, 9109, 'q', 'd', 6371, 'L', 'R', '3799', '1291', 'B', 'n', '2205', '8589', 'E', '3051', '4125', 's', '1249', 'C', '2011', 'T', '3707', '5687', '101', 'G', 'j', '9553', 'u', '1145', '8123', 'W', 'L', 'a', 'K', 'w', 'H', 7853, 'f', 7131, 9529, 1271, 'Y', 8999, 4175, 'o', 'l', 7007, 'h', 'q', 'A', 1357, 7183, 5543, 'C', 997, 3943], ['q', 3931, 'S', 7527, 't', 'h', 7173, 5055, 7401, 9043, 'V', 511, 2687, 111, 7281, 5291, 7079, 'b', 3343, 'b', 8673, 1575, 'L', 'R', '3799', '1291', 'B', 'n', '2205', '8589', 'E', '3051', '4125', 's', '1249', 'C', '2011', 'T', '3707', '5687', '101', 'G', 'j', '9553', 'u', '1145', '8123', 'W', 'L', 'a', 'K', 'w', 'N', 'F', 'n']