In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['p', 9773, 'Y', 'o', 'w', 's', '583', 'e', '2773', '9925', '8535', 'M', '9831', 'V', 'q', 'S', 5087, 'M', 7601, 'D'], [7787, 'l', 'o', 'w', 's', '583', 'e', '2773', '9925', '8535', 'M', '9831', 'V', 'q', 'X', 'W', 3163, 'f', 5201]