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

['R', 't', 'y', '2887', 'x', 4883], [5691, 9457, 'y', '2887', 'u', 'Y']
y, 2887

[1231, 'a', 9367, '155', 'r', '1473', '5679', '3161', 'L', 'e', 'b', 'm', '9427', '2001', '5293', '3487', 'K', '6467', 'S', 'e', 6603, 'm', 8145, 'L', 's', 1273, 9291, 'X'], [5773, 'D', 'W', 'F', 5987, 'D', 'H', 2095, 'I', 'X', 29, '155', 'r', '1473', '5679', '3161', 'L', 'e', 'b', 'm', '9427', '2001', '5293', '3487', 'K', '6467', 'S', 'C', 'a']
155, r, 1473, 5679, 3161, L, e, b, m, 9427, 2001, 5293, 3487, K, 6467, S

['g', 8659, 5005, 8069, 'L', 'E', 'U', 'q', '2013', 'C', '5187', 'N', '7905', 'P', '4631', '673', '1433', 'C', 'v', '6673', 'H', '1553', '6113', 'F', 'q', '5437', '8871', 'F', '9491', 'w', 'Y', 'g', 4879, 5989, 463, 5063, 2177, 'a', 'O', 3349, 'q', 9487, 'd', 10001, 4511, 1815, 'P', 5577, 'y', 'M', 5663, 9677, 'Q'], ['D', 'j', 'A', 'T', 'g', 6379, 'K', 7187, 'g', 'Q', 4993, 'l', 'F', 3301, 'P', 5273, 'E', 'U', 'q', '2013', 'C', '5187', 'N', '7905', 'P', '4631', '673', '1433', 'C', 'v', '6673', 'H', '1553', '6113', 'F', 'q', '5437', '8871', 'F', '9491', 'w', 'Y', 'n', 969, 7311, 'M', 'b', 'c', 2573, 'w', 'A', 9821, 59, 'w', 5715, 'M', 1565]

E, U, q, 2013, C, 5187, N, 7905, P, 4631, 673, 1433, C, v, 6673, H, 1553, 6113, F, q, 5437, 8871, F, 9491, w, Y