In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['H', 'U', 8765, 'R', 7157, '2641', 'G', '5211', 'f', '10029', 'R', '9749', '2153', '9759', '8377', 'z', '7447', 'k', 'N', 5797, 'V', 8393, 'y'], ['y', 105, 7463, '2641', 'G', '5211', 'f', '10029', 'R', '9749', '2153', '9759', '8377', 'z', '7447', 'k', 'B', 'i', 'l', 'c', 'Y', 'A', 'p', 't', 6701]