In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['P', 'B', 1899, 's', 4699, 'x', 'u', 4731, 1445, 3615, 977, 'L', 2409, 'y', 'j', 7723, 6753, 'J', 881, 'A', 5179, 2833, 'w', 'S', 'B', 757, 'T', '5867', 'o', 'J', 'v', '2537', 'D', 'J', '733', '5397', '6409', '317', '6245', 'S', '7563', '3583', 'E', '7669', '8311', '5603', 'y', 'y', '7855', '1405', 'm', 'x', '7217', 'p', 'N', 'X', 'P', 9749, 'k', 4371, 'x', 'u', 7069, 6261, 'k', 8371, 'G', 4683, 5361, 'U', 'C', 6815, 7939, 'k', 5057, 7095, 5403, 'U', 809, 6815], [1691, 'y', 'z', 'H', 'b', 'V', 'q', 3979, 'm', 'b', 'M', 'Z', 1945, 'R', 189, 'd', 8777, 'X', 4879, 'D', 'w', 'S', 'R', 4099, 3259, 5293, 'T', '5867', 'o', 'J', 'v', '2537', 'D', 'J', '733', '5397', '6409', '317', '6245', 'S', '7563', '3583', 'E', '7669', '8311', '5603', 'y', 'y', '7855', '1405', 'm', 'x', '7217', 'p', 'N', 'X', 'f', 'Z', 'T', 3125]