In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6981, 8285, 4997, 'w', 2001, 'y', 'S', '7601', '3745', 'M', '725', '7383', 'd', 'r', 'o', 's', 'k', 'e', '709', '6081', 'O', '4389', 'U', '5829', '6893', 'w', 'Q', '6173', 'o', 'M', 'q', '8957', '3949', 'e', '4435', 'T', 2599, 3993, 'w', 'Z', 'U', 'x', 'L', 'U', 4445, 'w', 9225, 'I', 3369, 'l', 8485, 'K', 'P', 6659, 8153, 3027, 6287, 'z', 'i', 'C', 'V'], ['H', 'Q', 4387, 'n', 'm', 'V', '7601', '3745', 'M', '725', '7383', 'd', 'r', 'o', 's', 'k', 'e', '709', '6081', 'O', '4389', 'U', '5829', '6893', 'w', 'Q', '6173', 'o', 'M', 'q', '8957', '3949', 'e', '4435', 'O', 'D', 'E', 'G', 't', 'e', 6271, 981, 'H', 'l', 4781, 5933, 'S', 'r', 5193, 'C', 805, 7147, 7803, 'i', 4899, 1915]