In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[7681, 'f', 7925, 8579, 9901, 'N', 6843, '5335', '6707', '4261', 'Z', 'F', '4743', '4251', '1257', 'o', '3329', '8415', 'N', 'b', 'x', '641', 'Z', 4929, 1457, 't', 'o', 'X', 'f', 6059], [9065, 'a', 7069, 5597, 'k', 1505, 2289, 'x', 9615, '5335', '6707', '4261', 'Z', 'F', '4743', '4251', '1257', 'o', '3329', '8415', 'N', 'b', 'x', '641', 'S', 6491, 'P']