In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[9617, 'l', 'j', 'Z', 'O', 4609, 'p', 1089, 3551, 'q', 'v', 'v', 'p', 5977, 85, 'I', 'V', 'p', 'D', 't', 1493, 'u', 4129, 9525, 9143, 'v', 'Y', '1535', 'f', '2247', 'A', 'b', '8145', '9701', 'm', '3637', '547', 'F', '1909', 'N', '7845', '8015', '365', '8959', 'b', '8051', '6751', 'R', '4689', 'b', 'J', 'a', 'b', 'q', 'z', 'Q', 5711, 'x', 't'], ['v', 3089, 'J', 'B', 'c', 8969, 'f', 'm', 'S', 'Y', '1535', 'f', '2247', 'A', 'b', '8145', '9701', 'm', '3637', '547', 'F', '1909', 'N', '7845', '8015', '365', '8959', 'b', '8051', '6751', 'R', '4689', 'b', 'J', 'a', 'b', 'q', 'J', 2855, 6225, 5771, 'g', 'D', 9391, 'I', 'X', 'B', 'l', 'M', 'j', 'C', 'I', 'E', 9471, 'P', 1655, 835, 'F']