In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['v', 'L', 9631, 2603, 'I', 3109, 3453, 'c', 2981, 815, 'Q', 6333, 5029, 'l', 8515, '8217', '8719', '4001', 'Y', '6567', 'S', '285', 'w', '8553', '1131', '823', 'a', 'v', 'G', 'g', 'a', '3393', '1721', 'i', '3067', '1903', '3191', 'R', '377', '7269', 'F', '2193', '8757', 's', 'K', 'f'], ['Y', 'W', 'u', 675, 9797, 'L', 'X', 'h', 9375, 5051, 'l', 'g', 'h', 't', 2615, 3899, 'y', 'Z', 'A', 'a', 8387, 7509, 3299, 'I', 'P', 'i', 'E', 'J', '8217', '8719', '4001', 'Y', '6567', 'S', '285', 'w', '8553', '1131', '823', 'a', 'v', 'G', 'g', 'a', '3393', '1721', 'i', '3067', '1903', '3191', 'R', '377', '7269', 'F', '2193', '8757', 'c', 'e', 729, 'P', 'V', 9015, 5579, 'S', 5705, 'K', 5367, 'm', 7339, 3619, 'W', 3795, 895, 2971, 8419, 'Q', 'S', 'x', 1173]