Teacher:In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
Teacher: Now, understand the problem? Solve this instance: [1299, 'A', 'H', '8689', 'D', '5623', '7343', 'G', 129], [2215, 7801, 'Q', 'Q', 'U', 'H', '8689', 'D', '5623', '7343', 'W', 8175, 'Q', 'x']
Student:
H, 8689, D, 5623, 7343