In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[4259, 'l', 989, 1997, 'K', 5783, 'w', 7679, 519, 3731, 613, '919', 'D', '5539', 'V', '987', 'h', '5763', 'E', 'e', '5007', 'V', '8157', 'q', 'S', '1285', '2367', '3641', '1853', 'e', 'P', 'W', 'b', 'K', 9459, 7969, 'e'], ['K', 2529, 3869, 9057, 6701, 6557, 9639, 'g', 5189, 3967, 'I', '919', 'D', '5539', 'V', '987', 'h', '5763', 'E', 'e', '5007', 'V', '8157', 'q', 'S', '1285', '2367', '3641', '1853', 'k', 'B', 'M', 'G', 8961, 4965, 'I']