In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[1161, 529, 4415, 7869, '4223', '4955', '3109', 'Y', 'Q', '6311', 'W', 'R', 'D', 'b', 5203], [6011, 'm', 1203, 'O', 7735, '4223', '4955', '3109', 'Y', 'Q', '6311', 'J', 'g', 'k']