In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[3261, 6565, 'l', 3237, 'm', 'd', 3407, 'Q', 6901, 7215, 2345, 'D', 'E', 9521, 6487, 'v', 'O', 9987, 'r', 383, 465, 's', 'I', '1677', '7047', '2467', 'Z', 'W', 'h', '2875', '363', '7325', 'K', '2627', 't', '8705', 'r', 'h', '1087', 'B', '8611', 'd', 'U', '9873', 'y', 'm', 'P', 'D', 1779, 'H', 6125, 'M'], [2855, 'n', 5917, 'n', 4791, 'Y', 4941, 3841, 243, 2959, 'T', 'P', 'i', 9723, 'U', 'O', 'c', 'Y', 'I', '1677', '7047', '2467', 'Z', 'W', 'h', '2875', '363', '7325', 'K', '2627', 't', '8705', 'r', 'h', '1087', 'B', '8611', 'd', 'U', '9873', 'L', 2373, 'u', 'T']