In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['f', 'V', 6801, 8735, 3095, 5547, 8657, 'X', 'Y', '705', 'r', '8783', '6271', 'u', 'K', 829, 'W', 3557, 'S', 879, 'l'], ['l', 'h', 'X', 'Y', '705', 'r', '8783', '6271', 'u', 'F', 'N', 4203, 'T', 'I', 3673, 5545]