In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[617, 6951, 6333, 3395, 8053, 2321, 5757, 'P', 'g', '25', '9345', '5685', 'B', '6273', '143', 'u', '4583', '4747', '1543', '3145', 'K', '5345', 'e', 'K', 'W', 'C', 'e', 'L', 'v', 8135, 'V'], ['N', 9385, 5053, 't', 'd', 1159, 101, 'a', 5939, '25', '9345', '5685', 'B', '6273', '143', 'u', '4583', '4747', '1543', '3145', 'K', '5345', 'e', 'K', 'W', 't', 'E', 9159, 'l', 5353, 'P', 'Y', 525, 7357]