In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[1883, 7931, 691, 4781, 577, '3527', 'j', 'x', 't', 'j', '2535', 'x', 'A', 'K', '7593', 'n', 'C', 'a', 5159], [4143, 775, 7443, 'z', 759, 4991, '3527', 'j', 'x', 't', 'j', '2535', 'x', 'A', 'K', '7593', 'b', 2799, 5019, 9265, 'q', 6319]