digraph Syzygy { KRRvKBN -> KBNvKR; KRRvKBN -> KRRvKN; KRRvKBN -> KRRvKB; KRRvKB -> KRvKB; KRRvKB -> KRRvK; KRRvK -> KRvK; KRvKB -> KBvK; KRvKB -> KRvK; KRRvKN -> KRvKN; KRRvKN -> KRRvK; KRvKN -> KNvK; KRvKN -> KRvK; KBNvKR -> KBNvK; KBNvKR -> KRvKN; KBNvKR -> KRvKB; KBNvK -> KNvK; KBNvK -> KBvK; }