In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[1919, 7999, 7203, 7279, 'S', 9995, 3299, 5989, 'o', 'Q', 3653, 171, 2291, 'q', 3243, 2953, 'X', 7715, 'o', 2669, 2379, '4777', '9235', 'k', '5959', '8669', 'k', '5427', 'w', 'H', 'L', 'l', '4119', 'G', '1047', '9837', '8193', 'X', '6451', 'u', '343', 'i', 'T', 'L', '3299', 'u', 't', '2067', 'z', 'A', 7353, 1757, 5921, 'f', 'D', 'P', 8861, 's', 'Z', 5953, 3697], ['x', 5197, 9161, 'p', 'P', 'X', '4777', '9235', 'k', '5959', '8669', 'k', '5427', 'w', 'H', 'L', 'l', '4119', 'G', '1047', '9837', '8193', 'X', '6451', 'u', '343', 'i', 'T', 'L', '3299', 'u', 't', '2067', 'z', 'O', 9449, 'l', 'o', 'Y']