In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['Z', 'Y', 2517, '3757', '503', 'Q', '6447', '3631', '7637', '6861', 'O', '483', '3347', '8385', 't', 1165, 8179, 'M', 'n', 'F', 2675, 'c'], [2819, 'k', '3757', '503', 'Q', '6447', '3631', '7637', '6861', 'O', '483', '3347', '8385', 'E', 3751, 'U', 8875, 'C', 'l', 9179]