In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['M', 861, 'a', 9203, '5735', '8499', 'x', 'I', 'p', 'n', '8151', 'o', '8275', '3877', '7955', 'O', 'q', '5143', 'H', 'x', '6387', '1803', 'P', 'w', 'k', '1713', 'V', 'n', '4463', 'J', 'P', 'o', 'x', '1377', 'F', 3891, 'P'], ['z', 1033, 'f', 1643, 911, 571, 'w', 8521, 2201, 8681, 5219, 8205, 6095, 'T', 'v', 'n', 'F', 981, 9521, 1653, 9809, '5735', '8499', 'x', 'I', 'p', 'n', '8151', 'o', '8275', '3877', '7955', 'O', 'q', '5143', 'H', 'x', '6387', '1803', 'P', 'w', 'k', '1713', 'V', 'n', '4463', 'J', 'P', 'o', 'x', '1377', 'w', 'y', 5155, 'T', 3599, 'x', 351, 'K', 3285, 'd', 'g', 'W', 'd', 'n', 1719, 2315, 'v', 2181]