In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['J', 'h', 's', 'd', 1155, 'T', 'A', 'W', '6905', 'G', 'i', '6763', '2185', 's', '2231', '2903', 'o', 'o', '961', 'p', 'S', 2153, 'O', 2247, 'v', 6595, 915, 'V', 4139, 'n', 'k'], [5711, 6879, 7187, 'Z', 'B', 'W', '6905', 'G', 'i', '6763', '2185', 's', '2231', '2903', 'o', 'o', '961', 'p', 'C', 'j', 's', 'P', 9933]