In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[737, 3003, '8137', 'N', '9835', '2579', 'P', '4015', 'R', 'u', 'g', 'h', 'G', '9619', 'D', '2091', 'H', 'T', 'l', 3441], [6783, 'j', 'x', 2327, 3751, '8137', 'N', '9835', '2579', 'P', '4015', 'R', 'u', 'g', 'h', 'G', '9619', 'D', '2091', 'H', 't', 'y']