In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[7079, 'q', 1617, 't', 'M', 6177, 'P', 'i', 'D', '3965', '4217', '5855', 'x', 'S', 'd', 2263, 'V', 'K', 1407], [9599, 4519, 'f', 'O', 'n', 'I', 'i', 'D', '3965', '4217', '5855', 'x', 'S', 'T', 7575, 'u', 'Z']