In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.

[EX Q]: [4817, 'A', '3155', 'W', 'm', 4061], [7701, 'P', '3155', 'W', 't', 'J']
[EX A]: 3155, W

[EX Q]: ['D', 'B', 6407, 'L', 'P', 'B', '4529', 'r', 's', 7599, 373], ['f', 'E', 'L', 'P', 'B', '4529', 't', 3723]
[EX A]: L, P, B, 4529

[EX Q]: [2575, 'E', '9709', '8003', 's', 'n'], [847, 9171, '9709', '8003', 'q', 'g']
[EX A]:
9709, 8003