In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[4003, 'k', 'T', 'l', 9937, 'u', 3643, 'e', 7811, 'H', 4315, 2777, 'S', 'v', 'l', 'z', 's', 'H', 'J', '8917', 'G', '7477', 'U', 't', 'x', 'N', '663', '1341', 'v', 'I', 'J', 'i', 8967, 'd', 'f'], ['T', 4199, 5495, 2647, 299, 2833, 'L', 'A', 'l', 9337, 'k', 'L', 'v', 'l', 'z', 's', 'H', 'J', '8917', 'G', '7477', 'U', 't', 'x', 'N', '663', '1341', 'v', 'I', 'w', 8559, 'g', 3811, 'O', 'C', 841, 4901, 'Z', 4025, 1913]