In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['k', 4649, 7689, 6685, 'H', 687, 1287, 9533, 'w', 'l', 5201, 'o', 'l', 'D', 267, 4171, 'r', 'l', 'u', 5625, 'Y', 't', 'j', 'c', 'V', 'G', '3757', 'P', '117', '2081', 'b', '947', '5891', 'z', 's', '3357', '1377', '1571', 'd', '5759', '2283', '7911', '1225', 'P', '6467', 'B', '6249', '9797', '6137', 'r', 'V', 't', 7703, 10027, 'z', 'L', 2663, 'y', 9521, 1655, 445, 9277, 'h', 9135, 'I', 'y'], ['x', 'p', 4371, 'D', 'j', 'c', 'V', 'G', '3757', 'P', '117', '2081', 'b', '947', '5891', 'z', 's', '3357', '1377', '1571', 'd', '5759', '2283', '7911', '1225', 'P', '6467', 'B', '6249', '9797', '6137', 's', 'y', 6049, 'M']