In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['l', 'A', 'v', 'E', 'w', 'Q', 'Q', 6985, 3957, 'H', 'U', 241, 9941, 'W', 1763, 'j', 'j', 'T', '8545', '1989', '1855', '2767', 'u', 'K', 'I', 'U', '5459', 'g', 'k', 'W', 'I', 'V', 'H', 'n', 'f', '8705', 'i', 'V', 'x', 'c', 'c', 5821, 4745, 4937, 'D', 'M', 'f', 'K', 'M', 9199, 'u'], ['c', 3797, 'k', 'Y', 7707, 'w', 7535, 5051, 'm', 1323, 1903, 'l', 'F', 'A', 'b', 3523, 6593, 'T', '8545', '1989', '1855', '2767', 'u', 'K', 'I', 'U', '5459', 'g', 'k', 'W', 'I', 'V', 'H', 'n', 'f', '8705', 'C', 'h', 'K', 3375, 2601, 323, 's', 139, 'P', 9903, 4527, 'I', 'q', 2281, 'q', 4847]