In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[8419, 2115, 3297, 'z', 'p', 3609, 'U', 'N', 7241, 't', 715, 5903, 'G', 1473, 'V', 'U', 2447, 'N', '7399', 'm', '9481', 'w', '1165', '3327', 'b', '9155', 'Z', 'A', 'e', '4045', 'Y', 't', 'O', '8289', 'M', '3945', '3193', 'b', 'I', 'm', 'f', 2637, 4297, 'G', 'x', 'K', 'z'], [6161, 'Z', 1235, 8145, 189, 4557, 'k', 751, 8307, 4903, 3699, 9841, 'n', 5417, '7399', 'm', '9481', 'w', '1165', '3327', 'b', '9155', 'Z', 'A', 'e', '4045', 'Y', 't', 'O', '8289', 'M', '3945', '3193', 'b', 'I', 'm', 'h', 727, 623, 'q', 609]