In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[435, 5991, 'L', 2351, 5221, 6381, 8655, 'U', 'q', 7163, 1771, 'c', 1181, 'v', '4831', '8155', 'D', '3079', '1677', 'r', '2713', 'k', '9587', '8141', '3037', '21', '9135', '9197', '3459', 'P', '915', 's', '5539', 'h', '599', '9937', 'o', 'C', '1637', '8921', 'u', 1721, 'W', 4519, 8045, 7749, 7163], ['z', 'Z', 9691, 'b', 'Y', 'A', 'a', 'q', 7549, 'm', 'x', 's', 'b', 5655, 2087, 'f', 'o', 8235, 1383, 'h', 'O', 7531, 'T', 2283, 'r', '4831', '8155', 'D', '3079', '1677', 'r', '2713', 'k', '9587', '8141', '3037', '21', '9135', '9197', '3459', 'P', '915', 's', '5539', 'h', '599', '9937', 'o', 'C', '1637', '8921', 'P', 4935, 7767, 4325, 755]