In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[4419, 5015, 6059, 'W', 9007, 3481, '2407', 'Y', 'w', '4599', '5793', 'U', 'L', '2659', 'j', 'P', 9285, 4423, 2601, 'o', 9775], [6245, 2891, 5827, '2407', 'Y', 'w', '4599', '5793', 'U', 'L', '2659', 'N', 'y', 'b', 6927, 'm']