In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['u', 3037, 'V', 6457, 8383, 7447, 251, 'B', 5845, 6783, 'N', 'w', 'I', 'V', '2291', '8727', 'r', 's', '3167', '3833', 'T', '4623', 'z', 'V', 'o', 's', '9439', 'u', 'v', 'g', 'u', 7063, 5575, 'V', 'p', 'Y', 405], [1339, 'A', 2623, 8649, 6641, 'x', 'i', 'B', 'u', 7255, 6905, 4461, 'l', '2291', '8727', 'r', 's', '3167', '3833', 'T', '4623', 'z', 'V', 'o', 's', '9439', 'u', 'v', 'D', 5417, 2913, 7711, 'l', 'k', 9743, 3347, 'T', 7809, 8463, 'p', 'h']