In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['l', 99, 'C', '127', '9053', '4465', 'Z', 'r', 'B', 'T', '2457', 'H', 'Y'], ['v', 'J', 6083, 1173, '127', '9053', '4465', 'Z', 'r', 'B', 'T', '2457', 'R', 'K', 6825]