In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['f', 1893, 'k', 3059, 1889, 867, 'x', 'K', '8891', '6609', 'z', '3979', 's', 'E', 'Z', 'T', 'K', '2219', '2317', 'N', '965', '9871', 'o', 'e', 'U', 'G', 'B', 'h', 'l', '6725', 'd', '1155', 'y', 'T', 'D', 'L', 'K', 'h', 'M', 'V', 'R', 'C', 1389, 'z', 'L', 'B', 't', 5947, 7, 'P', 'f', 'O', 4155, 't', 'n', 7985, 6493], [6583, 4689, 3597, 'f', 1513, 'b', 'g', 3953, 'H', 'p', 'k', 4643, 'w', 'U', 'Y', 8089, 'E', 'O', 4877, 9239, 'x', 8999, 'b', 'f', 7537, 6745, 'K', '8891', '6609', 'z', '3979', 's', 'E', 'Z', 'T', 'K', '2219', '2317', 'N', '965', '9871', 'o', 'e', 'U', 'G', 'B', 'h', 'l', '6725', 'd', '1155', 'y', 'T', 'Z', 'u', 'm', 6033, 'V', 'A', 'D', 'V', 'd', 1021, 'a', 't', 'b', 'C', 'h', 'e', 'T', 6181, 'F', 1887, 'x', 'A', 219, 'x', 'w', 9951]