In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[2693, 'F', 'R', 'C', 2079, '2953', '8589', 'W', 'v', '6821', 'r', 'T', 'F', '6627', 'i', '4985', '6073', '5947', '4001', 'K', 'F', 'O', 3127, 17, 3889, 'X', 2345, 'W', 'R', 8305, 'd', 1205], [5673, 2971, 'F', 'u', 'L', '2953', '8589', 'W', 'v', '6821', 'r', 'T', 'F', '6627', 'i', '4985', '6073', '5947', '4001', 'z', 'V', 'z']