In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['a', 'a', 'b', 'H', '579', '4275', 'V', 'd', 'w', 'd', 'I', 't', 'T', '7373', 'k', 'A', 'A', '9299', 'k', '7421', 'm', '8185', 'l', 's', 'A', 'a', '4649', 'u', 'h', 'G', '9981', 'Q', 'B', '1375', 'o', 6605, 6305, 'H', 2787, 979, 1951, 4959, 'O'], ['u', 387, 'q', 'o', 'l', 'V', 3883, 889, 7675, 4943, 'f', 2775, 'K', 'E', '579', '4275', 'V', 'd', 'w', 'd', 'I', 't', 'T', '7373', 'k', 'A', 'A', '9299', 'k', '7421', 'm', '8185', 'l', 's', 'A', 'a', '4649', 'u', 'h', 'G', '9981', 'Q', 'B', '1375', 'h', 6027, 9029, 'L', 'Y', 5941, 'b', 8249, 'k', 7811, 'Q', 'Y', 6715, 1251, 'S', 4317, 1175, 'g', 'b', 'b', 4521, 2263, 5909]