digraph Syzygy {
  KQRNvK -> KRNvK;
  KQRNvK -> KQNvK;
  KQRNvK -> KQRvK;
  KQRvK -> KRvK;
  KQRvK -> KQvK;
  KQNvK -> KNvK;
  KQNvK -> KQvK;
  KRNvK -> KNvK;
  KRNvK -> KRvK;
}