In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[47, 6747, 9089, 'P', 6253, 'R', 1505, 'K', 'r', '1017', 'm', 'u', '815', '3889', '6053', 'X', 'B', 'H', 'O', 'g', 'W', '2431', '3015', '8501', '1379', '9627', 't', '1431', '3063', 'T', 'h', 'k', 'A', 2205, 5109, 'W', 1719, 2503, 6737, 'U'], ['P', 8149, 'y', 3471, 'F', 'y', 'l', 6333, 2881, 'A', 105, 'y', 'b', 8097, 'r', '1017', 'm', 'u', '815', '3889', '6053', 'X', 'B', 'H', 'O', 'g', 'W', '2431', '3015', '8501', '1379', '9627', 't', '1431', '3063', 'f', 5245, 'Z', 'P', 1465]