In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
--------
Question: ['R', 't', 'y', '2887', 'x', 4883], [5691, 9457, 'y', '2887', 'u', 'Y']

Answer: y, 2887


Question: ['o', 833, 'H', 'I', 'x', 'u', 'a', 'L', 'H', 'g', '4519', 'J', 'E'], [9993, 'z', 'g', 'u', 'a', 'L', 'H', 'g', '4519', 'V', 9115]

Answer: u, a, L, H, g, 4519


Question: ['G', 6495, 769, 7377, 'l', '5967', '4935', '813', '6229', 'H', '1719', '469', '4775', 'f', 'V', 8231], [3855, 'p', 3579, '5967', '4935', '813', '6229', 'H', '1719', '469', '4775', 'f', 'C', 'K', 'Y', 1361, 'i', 4077, 331, 'B', 'C']

Answer:
5967, 4935, 813, 6229, H, 1719, 469, 4775, f