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

[2481, 7755, 2663, 2449, 4291, 'b', 5343, 'F', 'A', '3811', 'G', 'I', '415', '6825', '2449', 'q', 'W', 'x', 't', 'K', 'l', 539, 3959], ['W', 'N', 'K', 4351, '3811', 'G', 'I', '415', '6825', '2449', 'q', 'W', 'x', 'c', 9833]
3811, G, I, 415, 6825, 2449, q, W, x

['E', 'P', 'Z', '8337', 'L', '4245', 'M', 'M', 'H', '4531', 'B', 'p', '6961', 'x', 9461, 2587], [9027, 289, 2515, 'k', 'N', 'i', 9689, '8337', 'L', '4245', 'M', 'M', 'H', '4531', 'B', 'p', '6961', 'r', 'x', 737, 'a', 'w', 'K', 'S']
8337, L, 4245, M, M, H, 4531, B, p, 6961

['w', 'G', 5855, 'v', 'J', 'C', '2427', 'P', '6707', 'B', '6033', '6777', 'u', '925', 't', '913', 'W', '4469', 'c', '8691', '1215', 'G', '6655', 'u', '6599', '3989', 'Y', 'i', '4995', 'r', 'p', 'q', 6127, 'W'], [3069, 'v', 'b', 'g', 6275, 5339, 'b', 'v', '2427', 'P', '6707', 'B', '6033', '6777', 'u', '925', 't', '913', 'W', '4469', 'c', '8691', '1215', 'G', '6655', 'u', '6599', '3989', 'Y', 'i', '4995', 'U', 1007, 307, 693, 'H', 8703, 3833, 'o', 4607, 1803, 'R', 'T']
2427, P, 6707, B, 6033, 6777, u, 925, t, 913, W, 4469, c, 8691, 1215, G, 6655, u, 6599, 3989, Y, i, 4995