digraph Syzygy {
  KBNvKBN -> KBNvKN;
  KBNvKBN -> KBNvKB;
  KBNvKB -> KBvKN;
  KBNvKB -> KBNvK;
  KBNvKB -> KBvKB;
  KBvKB -> KBvK;
  KBNvK -> KNvK;
  KBNvK -> KBvK;
  KBvKN -> KNvK;
  KBvKN -> KBvK;
  KBNvKN -> KNvKN;
  KBNvKN -> KBvKN;
  KBNvKN -> KBNvK;
  KNvKN -> KNvK;
}