In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['I', 'f', 5385, 'z', 6887, 5417, 'U', 'P', '6615', 'S', 'k', '7403', '4513', '2083', '7695', 'H', 'P', '8055', 'w', '4743', 'b', '283', '5159', '6241', '1411', 'B', '1013', 'I', 'H', 'g', '6487', 'V', 'g', 'T', 347, 9683, 'B', 6429, 'Z', 715, 'q', 'A', 'N', 's', 1669, 'b'], [6857, 'M', 'L', 1855, 8749, '6615', 'S', 'k', '7403', '4513', '2083', '7695', 'H', 'P', '8055', 'w', '4743', 'b', '283', '5159', '6241', '1411', 'B', '1013', 'I', 'H', 'g', '6487', 'V', 'B', 9179, 4575, 2197, 3103, 2787, 'h', 3691, 5673, 257, 9, 'y', 1679, 5775, 'c', 4727, 'p', 'i', 8111, 9949, 'J']