In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['v', 3911, 4213, 'l', '6259', '9069', '5131', 'Z', 'q', '1755', '6005', '6935', 'b', 'j', '3767', 'W', 'x', '8941', 'P', 'Q', 'W', 2377, 3309, 1589, 'Z', 8645, 8671, 'c', 663, 'o', 8599, 'l', 's', 'C', 'L'], [2047, 2229, 4169, 7825, 'l', '6259', '9069', '5131', 'Z', 'q', '1755', '6005', '6935', 'b', 'j', '3767', 'W', 'x', '8941', 'P', 'Q', 'P', 3411, 7661, 'M', 'Q', 'x', 8911, 't', 4923, 'e']