In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['W', 8757, 3751, 5681, 'N', 'y', 9625, 'k', 5543, 745, 'g', 7093, 769, 1653, '2901', '7089', 'r', 'X', '10017', 'P', 'S', 'v', 'e', '7169', '7311', '4455', '6229', 'k', '691', '1137', 'H', 'u', '249', 'F', '5113', '7953', '5775', '1905', '8559', '1523', 'y', 'Q', 3233], [4291, 9943, 's', 'x', 'Z', 'J', 2425, 'B', 'X', 5261, 8479, 2431, 'I', 9241, '2901', '7089', 'r', 'X', '10017', 'P', 'S', 'v', 'e', '7169', '7311', '4455', '6229', 'k', '691', '1137', 'H', 'u', '249', 'F', '5113', '7953', '5775', '1905', '8559', '1523', 'A', 5793, 3625, 6477]