In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['I', 'c', 'Y', 'v', 1821, 't', 'K', 'b', 9869, 'v', 'e', 'c', 'm', 'e', 'q', 'h', 'O', 'V', 'X', 'F', '9517', 'Z', '6107', '6205', '8211', 'u', '1985', '485', '2159', '6595', '9751', 'z', 'M', 'X', '7059', '8915', '177', 'U', '8659', 'N', 'L', 'c', 'S', 2207, 4669, 1657, 6083, 749, 7917], [3381, 'm', 743, 'T', 5433, 'p', 6987, 1199, 'I', 6681, 1261, 6553, 'l', 'V', 'X', 'F', '9517', 'Z', '6107', '6205', '8211', 'u', '1985', '485', '2159', '6595', '9751', 'z', 'M', 'X', '7059', '8915', '177', 'U', '8659', 'N', 'L', 'i', 8203, 3243, 9239, 9857, 'H', 7391, 'F', 6071, 'G', 7811]