In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[7855, 367, 8647, 9917, 9089, 'U', 5329, 'V', 9419, 3843, 'M', '7745', 'N', 'B', 'm', 'V', 'q', '449', '7315', 'd', '4821', '1535', '2733', '713', '9271', 'Y', '5605', '8443', '6643', 'K', 'D', 'D', 7465, 'M', 'T', 3699, 'b', 8885, 'L', 'k'], ['p', 9677, 'R', 23, 1797, 2241, 4425, 1705, 'Z', 'C', 2803, 'S', 'N', 911, 567, 2169, 'k', '7745', 'N', 'B', 'm', 'V', 'q', '449', '7315', 'd', '4821', '1535', '2733', '713', '9271', 'Y', '5605', '8443', '6643', 'K', 'W', 'J', 3419]