In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['g', 7193, 7991, 779, 'f', 'L', 'l', 'M', 'A', '3463', '7839', '8915', 'M', '5155', '1665', 'A', '2915', 'P', 'y', 'k', 'E', '2997', 'E', '9091', '8271', 'q', 'a', 'a', '1225', 'K', 'v', 'U', '7609', '1055', 'L', 'I', 'f', 'c', 4271, 5751, 4315, 'Q', 1753, 1331, 'W'], ['C', 4081, 'g', 6163, 'Z', 1647, 1769, 2891, 'I', 7273, 't', 'J', 'T', 9209, 'l', 9745, 'k', 'H', 8003, 4199, 8715, 'A', '3463', '7839', '8915', 'M', '5155', '1665', 'A', '2915', 'P', 'y', 'k', 'E', '2997', 'E', '9091', '8271', 'q', 'a', 'a', '1225', 'K', 'v', 'U', '7609', '1055', 'L', 'I', 'f', 'k', 'M', 'p', 5091, 'V', 'T', 9989, 'N', 3031, 'v']