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

['U', 3417, 5169, 'r', 's', 2909, 3363, 'x', 8463, 9703, 3041, 'e', 4997, 1689, 'Y', 'y', 'T', '53', '8895', '1117', '4025', 'v', '1689', 'e', 'V', 'k', '2673', '5425', 'c', 'p', '8235', 'Q', 'G', 2185, 'I', 'D', 'U', 2889, 6837, 'B', 'x', 2775, 'I', 3053, 1801], [525, 'd', 'K', 'T', '53', '8895', '1117', '4025', 'v', '1689', 'e', 'V', 'k', '2673', '5425', 'c', 'p', '8235', 'Q', 'z', 9959, 'H', 1865, 'M', 8529]
T, 53, 8895, 1117, 4025, v, 1689, e, V, k, 2673, 5425, c, p, 8235, Q

[7409, 'l', 'h', '6739', '5187', 'K', 'D', '7539', '5609', 'x', 'p', 'S', 'j', 'j', '3077', '6081', 'd', '61', '2871', 's', 'J', 'M', 'Q', 'R', 5567, 'p', 'L'], [2329, 5573, 'N', 't', 3213, 9107, 9337, 79, 1607, 'J', 'y', 'g', 's', 'h', 4251, 'L', 3147, '6739', '5187', 'K', 'D', '7539', '5609', 'x', 'p', 'S', 'j', 'j', '3077', '6081', 'd', '61', '2871', 's', 'x', 'Q']
6739, 5187, K, D, 7539, 5609, x, p, S, j, j, 3077, 6081, d, 61, 2871, s

['b', 't', '3251', '8251', 'Q', 'h'], ['q', 2211, '3251', '8251', 'U', 'U']

3251, 8251