In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['h', 'h', 5397, 'j', 'U', 7947, 5299, 'M', '9421', 'm', '7245', 'Q', 'c', 'B', 'c', '9621', 'A', 'K'], ['q', 'n', 'o', 'X', 'i', 'D', 'j', 9065, 'M', '9421', 'm', '7245', 'Q', 'c', 'B', 'c', '9621', 'R', 'k', 8925, 'm', 9155, 'I', 2043]