In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[7659, 'W', 4091, 8713, 'N', 5995, 'W', 6195, 5493, 2533, 9767, 'L', 4257, 't', 2791, 571, 7259, 8833, '1981', 'O', '7981', 'X', '5805', '2709', 'u', 'W', '1099', '3477', '3893', 'c', '9075', '3781', '5567', 'd', '8509', '807', '3585', '3499', 'v', 'N', 809, 'p', 2023, 183, 5389, 4817, 'L', 5455, 8207, 6871, 9539, 6931], ['b', 7533, 7559, 'i', 8113, 4331, 2327, 'K', 9385, 1883, 'N', 'e', 'X', 'G', 2871, 'u', 323, '1981', 'O', '7981', 'X', '5805', '2709', 'u', 'W', '1099', '3477', '3893', 'c', '9075', '3781', '5567', 'd', '8509', '807', '3585', '3499', 'v', 'U', 'T', 's', 4413, 5489, 2549, 'b', 'i', 'a', 'I', 853, 'D', 't', 4371]