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

Let me give you an example: [5797, 8817, '8297', 'b', 'U', 'b'], [5843, 8809, '8297', 'b', 'W', 'C']
The answer to this example can be: 8297, b
Here is why: 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'].

OK. solve this:
['U', 6217, 3273, 4433, '2195', '6107', 'O', 'g', 'I', '5535', 'b', 's', 'w', 'G', 'T', 'u', 'R', 'c', '5175', 'k', 'b', 709, 199], [2373, 'R', '2195', '6107', 'O', 'g', 'I', '5535', 'b', 's', 'w', 'G', 'T', 'u', 'R', 'c', '5175', 'Y', 'a', 8677, 'w', 7403, 'w', 267, 3013, 5487, 'B']
Answer:
2195, 6107, O, g, I, 5535, b, s, w, G, T, u, R, c, 5175