In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['i', 891, 4699, 'K', 'S', 'k', '6309', '9635', 'T', 'w', '1537', 'i', 'm', 485], ['f', 'Y', 'e', 'k', '6309', '9635', 'T', 'w', '1537', 'O', 'D', 9773, 'd']