In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['F', 6387, 'F', 'V', 'C', 'R', 'O', 'm', 'M', 'T', '8861', 'l', 'C', 't', 'Z', 'k', '5481', '7941', '2213', '2113', 'O', 'S', '3037', 'x', 't', 'm', 9273, 4169, 'p', 4979, 8997, 'Y', 3493, 5199, 3731, 1457, 'F'], [7317, 6263, 4441, 't', 8981, 4213, 5051, 6403, 'V', 'C', 'R', 'O', 'm', 'M', 'T', '8861', 'l', 'C', 't', 'Z', 'k', '5481', '7941', '2213', '2113', 'O', 'S', '3037', 'r', 'v', 8705, 'W', 571, 'f', 'c', 'L', 'y', 3423]