In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[4551, 3985, 5225, 'F', 'u', 9535, 'e', 'C', 'B', 'v', 'e', 'C', 'p', '195', '7879', 'p', '6759', 't', '9997', 'T', 'I', 'p', '7573', '485', 'U', 'Q', 'P', 'j', 2203, 1485, 'u', 9447, 10029, 'c', 'b', 8803], ['M', 9643, 'J', 'x', 4409, 'r', 891, 773, 9615, 'v', 'K', 7613, 'L', 'C', 'p', '195', '7879', 'p', '6759', 't', '9997', 'T', 'I', 'p', '7573', '485', 'U', 'Q', 'x', 6931, 'I', 6181, 'E', 'k', 'w', 'L', 'C', 'G', 7003, 4791]