digraph Syzygy {
  KQNvKN -> KNvKN;
  KQNvKN -> KQvKN;
  KQNvKN -> KQNvK;
  KQNvK -> KNvK;
  KQNvK -> KQvK;
  KQvKN -> KNvK;
  KQvKN -> KQvK;
  KNvKN -> KNvK;
}