In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
One example: [5797, 8817, '8297', 'b', 'U', 'b'], [5843, 8809, '8297', 'b', 'W', 'C']
Solution is here: 8297, b
Explanation: Here, '8297, b' is the longest common subsequence in both the input lists [5797, 8817, '8297', 'b', 'U', 'b'] and [5843, 8809, '8297', 'b', 'W', 'C'].

Now, solve this: ['L', 9623, 5997, 3117, 'E', '3879', '3015', '7549', '3515', 'B', '7983', 'S', '647', '4799', 'e', 'b', 'f', '2841', 'a', 'g', '9993', '6955', 'S', '9361', 'O', 6159, 8047, 'A', 'k', 2903, 9269, 4717, 'b', 7295], [3469, 6715, 'W', 8963, 3391, 6951, 'Z', 2615, 'I', 4259, 'e', 'f', 'g', 'E', '3879', '3015', '7549', '3515', 'B', '7983', 'S', '647', '4799', 'e', 'b', 'f', '2841', 'a', 'g', '9993', '6955', 'S', '9361', 'y', 'q', 'P', 9015, 'N', 2987, 'J', 'h', 'S', 9949, 'a', 'H', 'A', 1917, 'z', 'z', 1677, 2167, 4205]
Solution:
E, 3879, 3015, 7549, 3515, B, 7983, S, 647, 4799, e, b, f, 2841, a, g, 9993, 6955, S, 9361