In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[4937, 5827, 6485, 'j', 'c', '2117', 't', 'i', 'B', '4489', 'J', 'a', 'z', 2059, 8473], [1133, 'u', '2117', 't', 'i', 'B', '4489', 'I', 'i']