In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[7175, 'K', 1813, 3271, 'F', 7647, 1437, 'w', 'U', 3365, 8425, 'N', 'd', 'z', 'X', 'U', 8103, 4573, 3741, 3225, 'm', 's', 's', 3637, 7135, 'i', '9303', 'O', '1607', '847', '4025', 'e', 'z', 'd', '8455', 'a', 'H', 'i', '1847', 'O', '2661', 'p', '5497', 'K', 's', '9539', 'N', '6517', 'x', 'y', 'X', 5111, 6633, 'X', 2295, 773, 2541, 1929, 'D', 'V', 'Z', 6315, 'T', 9595, 'r', 9977, 'X', 9897, 29, 'f', 6945, 5183, 'Q'], [3117, 3377, 'i', '9303', 'O', '1607', '847', '4025', 'e', 'z', 'd', '8455', 'a', 'H', 'i', '1847', 'O', '2661', 'p', '5497', 'K', 's', '9539', 'N', '6517', 'x', 'y', 'l', 'f', 'I', 241, 'j', 'H']