In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6137, 'e', 'Z', 3327, 9991, 2085, 'F', 'h', 'w', 1135, 'r', 5135, 'y', 'i', '6669', '7161', '1291', 'l', '7353', '3311', 'S', 'x', 'c', 'T', '4343', '255', 'f', '6411', '7981', '4277', 'c', 'u', 'o', '8707', 'g', 857, 'J', 'u', 'z', 8715, 7109, 973, 'R'], ['n', 1767, 'K', 9995, 1233, 'Y', 'q', 'S', 'e', 'W', 9007, 'q', 'C', 'e', 'i', '6669', '7161', '1291', 'l', '7353', '3311', 'S', 'x', 'c', 'T', '4343', '255', 'f', '6411', '7981', '4277', 'c', 'u', 'o', '8707', 'O', 4785, 4537, 'f', 'u', 'C', 5053, 1705, 'V', 2989, 'W', 2671, 'k', 'r', 'm', 'g', 6669, 4459, 'h', 'k', 6121]