In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[4879, 'k', 'o', 7107, 'R', 'i', 5397, 'P', 'Q', 'b', '9223', '5943', '9719', 'D', '2999', '8307', '6745', '7301', '7537', 'P', '1847', '1499', 'b', 'd', 4201, 6031, 9447, 'q'], ['T', 'U', 'X', 1279, 853, 1527, 8123, 'Z', 'b', '9223', '5943', '9719', 'D', '2999', '8307', '6745', '7301', '7537', 'P', '1847', '1499', 'X', 2005, 435, 'y', 7459, 'w']