In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[1759, 'y', 'r', '1745', '6541', '6939', '2653', 'e', 's'], [6039, 2505, 'R', '1745', '6541', '6939', '2653', 'S', 'C', 'z']