In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[3549, 'B', 3847, 2689, 3719, 'S', 'A', 'V', 8961, 5605, 'M', '5479', 'g', 'I', 'e', 'g', '467', '9345', 's', '1509', 'W', 'n', 'O', '469', '627', 'P', 'G', 7915, 1525, 3139, 3875, 3445, 8495, 'g', 3779, 'S', 'M', 6793, 'b'], [3293, 4385, 'U', 409, '5479', 'g', 'I', 'e', 'g', '467', '9345', 's', '1509', 'W', 'n', 'O', '469', '627', 'Q', 8375, 1717, 3133, 7485, 7955, 'R', 2199, 103, 'j', 5241, 't']