In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['I', 2683, 8149, 'e', 'I', '2905', 'b', '7709', '1913', '9795', '6365', '2797', '523', '2925', 'H', 9557, 't', 'J', 'A', 's'], [3763, 5873, 'S', '2905', 'b', '7709', '1913', '9795', '6365', '2797', '523', '2925', 'L', 6397, 717, 8923, 'D', 'Q']