digraph Syzygy { KRBvKBB -> KBBvKB; KRBvKBB -> KBBvKR; KRBvKBB -> KRBvKB; KRBvKB -> KBvKB; KRBvKB -> KRvKB; KRBvKB -> KRBvK; KRBvK -> KBvK; KRBvK -> KRvK; KRvKB -> KBvK; KRvKB -> KRvK; KBvKB -> KBvK; KBBvKR -> KBBvK; KBBvKR -> KRvKB; KBBvK -> KBvK; KBBvKB -> KBvKB; KBBvKB -> KBBvK; }