In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6621, 'b', 2773, 'b', 1935, 'P', 6549, 'u', 1929, 'm', 'm', 8965, 'B', 2113, 4307, 'D', 'u', '8055', 'E', 't', 'f', '9037', '8861', '119', '6419', 'L', 'Z', 'u', '407', 's', '3665', 'v', '3857', '4947', 'F', 'V', 'w', 'P', 2319, 9567, 9681, 2075, 'B', 3153], ['w', 's', 4553, 'f', 'C', 1631, 9829, 5521, '8055', 'E', 't', 'f', '9037', '8861', '119', '6419', 'L', 'Z', 'u', '407', 's', '3665', 'v', '3857', '4947', 'F', 'V', 'w', 'a', 'Z', 9793, 2499, 6991, 8167, 6669, 'i', 6263, 67, 'x', 'c']