In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['i', 'e', 'g', 'r', 'N', 4255, 1177, 'B', 'n', 9041, 7797, 9403, 377, 599, 1495, 5397, 'd', 3161, 'T', 'o', '6811', 'x', '931', 'o', '373', 't', 'V', 'a', '5303', '91', 'N', 'r', '1677', 'I', 'a', '841', '3639', '4649', '9917', 'z', 'G', '9823', 'n', 'g', 'z', 7625, 'O', 'V', 4639, 5037, 3199, 6525, 1511, 965, 7503], ['t', 3897, 'w', 'n', 6885, 'v', 9651, 'b', 725, 1749, 4981, 'T', 'v', 3101, 1339, 'E', 6707, 'M', 9507, 'R', '6811', 'x', '931', 'o', '373', 't', 'V', 'a', '5303', '91', 'N', 'r', '1677', 'I', 'a', '841', '3639', '4649', '9917', 'z', 'G', '9823', 'o', 'r', 'f', 7291, 'A', 4075, 'W', 2075, 'i', 'b', 269, 'y', 'c', 'X', 'O', 1141, 'k', 9707, 'B', 4875, 7427]