In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[4391, 'U', 'o', 581, 'H', 5885, 6137, 433, 8923, 7125, 8933, 2983, 'k', 'H', 'l', 'j', 'v', '7017', '3839', '8155', '3199', 'p', 'i', '2937', '357', '3661', '5417', '2393', '679', 'D', 'c', '6365', 'X', 'd', 'c', 'w', 'd', 't', 8663, 5671, 'M', 4287, 'E', 'x', 's', 'u', 517, 'r', 'q', 'A', 6401, 6759, 9545, 1093], ['H', 8427, 4611, 9921, 'B', 'K', 'v', '7017', '3839', '8155', '3199', 'p', 'i', '2937', '357', '3661', '5417', '2393', '679', 'D', 'c', '6365', 'X', 'd', 'c', 'w', 'd', 'r', 1571, 357, 7265, 'X', 'W', 'e', 869, 'k', 'Y', 1975, 959, 'L', 8213, 7597]