In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[9661, 459, 'R', 'w', 8805, 'N', 'v', 6459, 8127, 'Z', 9225, '2271', 'q', '5717', '4051', '827', 'v', 'I', 'x', 'S', 'a', '4301', '5729', 'w', '6347', '6643', '4927', 'T', '5049', '8689', 'l', '999', '3949', 'a', '919', '1849', 'V', 4465, 3579, 5679, 'b', 'N', 8817, 'e', 7349, 9573, 2899, 4115, 'P', 2875, 4731, 2617, 8831, 631, 1799, 9563], [3277, 'O', 'r', 'x', 7575, 489, 955, 7873, 269, 'Y', 'q', '2271', 'q', '5717', '4051', '827', 'v', 'I', 'x', 'S', 'a', '4301', '5729', 'w', '6347', '6643', '4927', 'T', '5049', '8689', 'l', '999', '3949', 'a', '919', '1849', 'z', 2777, 6267, 231, 903, 'Q', 'T', 5717, 's', 6491, 6225, 517, 'E', 7815, 'N', 845, 'M']