In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6073, 8679, 9521, 389, 1223, 'Q', '9635', 'w', 'u', '2481', 'd', '3661', '7867', 'j', '2455', 'T', '3711', '4707', '1237', 'l', 'u', 'j', 't'], ['m', 4053, 9307, 7731, 'J', 9387, 261, 5065, 'H', 'E', 'Q', '9635', 'w', 'u', '2481', 'd', '3661', '7867', 'j', '2455', 'T', '3711', '4707', '1237', 'l', 'u', 'V', 'm', 's', 479, 7507, 1811, 1119, 'X', 'a', 857]