In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[4119, 7807, 7431, 'X', 'x', '7013', '4521', '2717', '2425', '5347', 'A', '8461', '491', 'B', '6269', 'Q', 'p', 'R', 575, 'v'], ['D', 'Q', 'H', 'X', 'r', 9231, 'n', 7727, 'N', 8957, 'Z', 3071, 'X', 'x', '7013', '4521', '2717', '2425', '5347', 'A', '8461', '491', 'B', '6269', 'Q', 'e', 'i', 'v', 345, 'A', 'c', 'C']