In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[1751, 'Y', 7679, 2945, 'p', '4903', '7573', '3201', 'B', 'F', 'S', 'x', '1687', 'W', 'O', '5671', 's', '3905', '9221', 'P', '6169', 'S', '9641', 'L', 'C', 'L', 'n', 'E', 'o', '2043', 'n', 'e', '8595', 'c', 'f', 2813, 'T', 'q', 5057, 'D', 'y', 'k', 'X', 7201], ['R', 'B', 'T', 2555, 7461, 8271, 'c', 799, 9533, 'E', 9413, 'E', 7099, 8609, 'V', 1719, 4753, 'u', 'o', 'W', 5059, 'G', 4761, 'K', 9871, 7847, 7809, '4903', '7573', '3201', 'B', 'F', 'S', 'x', '1687', 'W', 'O', '5671', 's', '3905', '9221', 'P', '6169', 'S', '9641', 'L', 'C', 'L', 'n', 'E', 'o', '2043', 'n', 'e', '8595', 'c', 'V', 'K']