In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[2429, 9097, 8403, 'n', 'i', 'c', 'w', 1843, 4251, 's', 'M', 'k', '8151', 'L', '8959', '4635', '29', 'X', 'E', '2453', 's', 'q', 'x', 6071], ['T', 'M', 3729, 7393, 'P', 'R', 'U', 'k', '8151', 'L', '8959', '4635', '29', 'X', 'E', '2453', 's', 'q', 'p', 'C', 'u', 4827, 7859]