In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[4051, 'c', 'f', 8581, 1235, 5845, 'D', 'i', 'i', 129, 1399, '7829', 'n', 'G', '4261', '4529', 'i', '63', 'o', '6117', 'F', 'K', '7043', '5391', 'X', 'r', 'V', 'f', '6541', 'X', '1289', 't', 'P', '5097', 'y', '6529', '7729', 'y', 'r', 'Q', 'c', 'r', 'J', 5431, 785, 3371, 'A', 't', 'v', 6259, 5327, 'I', 8091, 'g', 'U', 'l', 'v', 8403, 9247, 'P', 717, 'C', 'D', 9743, 'H', 21], [9335, 'h', 'p', 4233, 'A', 'W', 'J', 'l', 2579, '7829', 'n', 'G', '4261', '4529', 'i', '63', 'o', '6117', 'F', 'K', '7043', '5391', 'X', 'r', 'V', 'f', '6541', 'X', '1289', 't', 'P', '5097', 'y', '6529', '7729', 'y', 'r', 'N', 5405, 'M', 8431, 2191, 'y', 9387, 3477, 'G', 'h', 'F', 'c', 'S', 6147, 'U', 2209, 'K', 'D', 'o', 9959, 'p']