In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[639, 'o', 'z', 1479, 'O', 8695, 8599, 7371, 6247, 'V', 'X', '7115', '8261', '1401', 'G', '4607', '7633', 'v', 'v', '3919', '2965', '8967', 'C', 'l', 'x', 3757, 'J', 1649, 7713, 'P', 'c', 'M', 3945, 'V', 2315, 'd', 'E'], ['Q', 1107, 5747, 'T', 961, 4539, 'u', 'V', 'X', '7115', '8261', '1401', 'G', '4607', '7633', 'v', 'v', '3919', '2965', '8967', 'C', 'l', 'L', 'M']