In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[3809, 9745, 1767, 'g', 3295, 'e', 'H', '8073', '3923', '7191', '6451', '4211', '2137', 'j', 'i', 'T', 4597], [8541, 'C', 'e', 'H', '8073', '3923', '7191', '6451', '4211', '2137', 'j', 'r', 'k']