In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['n', 'N', 9425, 3027, 2469, 2079, 'q', 8355, 'L', 'X', 'V', '9141', 't', '3279', '8243', '6931', '1963', 'U', 'z', '9873', 'I', 'c'], [8293, 'v', 5517, 'H', 'I', 6505, 'O', 'N', 'X', 'V', '9141', 't', '3279', '8243', '6931', '1963', 'U', 'z', '9873', 'd', 'f', 983, 'm', 8175, 'S']