In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[245, 7943, 4021, 'N', 545, 'G', 'Y', '2539', '5729', '1911', '6195', '6849', 'C', 'e', '10007', 'L', 'V', 5489, 8509], ['Q', 'A', 7381, 'G', 'Y', '2539', '5729', '1911', '6195', '6849', 'C', 'e', '10007', 'L', 'Y', 'L', 'u', 'x', 'N', 'l', 4763, 9901, 9495]