In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6471, 4253, 9735, 'P', 'H', '145', '683', 'c', 'w', 'K', '6923', '1099', '1653', '4909', '6691', 'E', '4851', '4023', '6955', 'X', 'J', 'Q', 'F', 6475, 1477, 'G'], [7067, 1913, 's', 'y', '145', '683', 'c', 'w', 'K', '6923', '1099', '1653', '4909', '6691', 'E', '4851', '4023', '6955', 'v', 'Q', 2641, 'Z', 'u', 'J', 'H', 5351, 'o', 1593, 9057, 4153, 'B', 'd']