In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[7501, 6995, 'x', 573, 5313, 'v', 1163, 't', 'b', '4911', 'k', '7595', 'o', 'f', 'K', 'e', 'a', 'b', '4127', 'V', '5139', '4363', '2519', 'X', '5611', '25', '7431', 'N', '8973', '9295', 'q', 'p', 'g', 7075, 'X', 4305, 6549, 4487, 981, 759, 9313, 2719, 915, 'h', 2955], [1081, 1423, 7971, 'M', 1405, 'u', 8489, 'y', 'I', 'X', 'l', 'l', 6087, '4911', 'k', '7595', 'o', 'f', 'K', 'e', 'a', 'b', '4127', 'V', '5139', '4363', '2519', 'X', '5611', '25', '7431', 'N', '8973', '9295', 'q', 'k', 'f', 8579, 4477, 'o', 'M', 'i', 'X', 8649, 3383, 'r', 'w', 3667, 'D', 'm']