In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[2649, 27, 'R', 7979, 'N', 4897, 9869, 5759, 'J', 3999, 8265, '57', '5939', 'A', '7659', 'd', 'C', '171', '6311', '1783', '8097', 'k', '9253', 'R', '9469', 'w', 'u', 'X', 'S', 'h', '23', 'r', 'E', 'W', '3707', 'u', 'C', 'E', 'H', 'Q', 'y', 1189, 't', 'Y', 3407, 447, 1837, 'n', 'c', 2227, 'G', 4547, 3785, 'K', 6543, 'j', 'w', 9361, 6545, 'T', 'h', 'P', 9425, 'P', 9005, 4209], [6945, 'p', 6169, 129, 8783, 'T', 'u', 'm', 'M', 9569, 2949, '57', '5939', 'A', '7659', 'd', 'C', '171', '6311', '1783', '8097', 'k', '9253', 'R', '9469', 'w', 'u', 'X', 'S', 'h', '23', 'r', 'E', 'W', '3707', 'u', 'C', 'E', 'H', 'Q', 'x', 3389, 5815, 'a', 5761, 6313, 979, 'e', 2835, 6861, 4083, 7467, 1815, 2029, 'W', 7347, 7997, 2923, 'g', 5577, 7481, 'A', 1265, 3127, 2705, 4885, 9613, 'X']