In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['i', 'J', 1021, 2921, 'x', 'F', 4811, 1683, 6787, '4511', '7883', '9149', 'h', 'B', '9229', 'e', 'B', 'D', '3183', 'I', 529, 'h'], [7343, 8675, 9745, 'L', 9533, 'W', 3077, 'z', 'G', '4511', '7883', '9149', 'h', 'B', '9229', 'e', 'B', 'D', '3183', 'C', 6947, 'A', 'G', 'V', 8851, 4107, 'Z', 31, 't']