In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[8463, 2117, 3715, 6105, 8883, '7723', '6313', 'I', 'Q', '2101', '2159', 'c', '3689', 'Q', 'N', 'z', 769, 9823, 305, 1499, 'Q', 1467, 5205], [8321, 1451, 'e', 'X', 6779, 1691, 'x', '7723', '6313', 'I', 'Q', '2101', '2159', 'c', '3689', 'Q', 'V', 'd', 'F', 4161, 'W', 'M']