In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6557, 'J', 5163, 1025, 2063, 'w', 4933, 'L', 8333, 'H', 1337, 'Z', 'L', 'S', 4079, 6377, 'F', '31', 'I', '4673', 'p', 'b', '5623', '7167', '2493', '6461', 'W', 'v', 'R', '7227', 'k', '5489', '3153', '5559', 'i', 'A', 'r', 3913, 'V', 7271, 'v', 7503, 7173, 'C', 'I', 'A', 769, 7709, 1841, 4019, 1255], [9553, 4779, 4623, 'm', 'C', 'i', 'f', 'W', 1481, 'R', 'G', 8873, 3679, '31', 'I', '4673', 'p', 'b', '5623', '7167', '2493', '6461', 'W', 'v', 'R', '7227', 'k', '5489', '3153', '5559', 'i', 'A', 'X', 't']