In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[2657, 9739, 's', 't', 9269, 'G', 'j', 'R', 'l', 119, 'V', 2753, 'V', 5255, 7821, '1931', '6905', 'u', '6137', '7665', '7679', '7019', 'O', 'F', 'i', 'u', 'L', 'e', 'E', 'G', '8939', 'n', 'Y', 't', 2565, 'c', 'G', 701, 'x'], ['x', 'K', 8907, 9149, 'A', 6585, 't', 7561, 5293, 'j', 9499, 3181, 8867, 'C', 'P', '1931', '6905', 'u', '6137', '7665', '7679', '7019', 'O', 'F', 'i', 'u', 'L', 'e', 'E', 'G', '8939', 'n', 'V', 'E', 2565, 863, 'N', 7535]