all 36 types with at most 7 vertices: {'polytopes': 36, 'pairs': 1947, 'nonzero pairs': 60, 'polytopes with a linked pair': 13}
+ 0/1-polytopes with at most 9 vertices: {'polytopes': 275, 'pairs': 77695, 'nonzero pairs': 612, 'polytopes with a linked pair': 105}
+ five named polytopes: {'polytopes': 280, 'pairs': 96295, 'nonzero pairs': 932, 'polytopes with a linked pair': 109}
+ 400 random 9-vertex polytopes with at most 26 edges: {'polytopes': 680, 'pairs': 498389, 'nonzero pairs': 4056, 'polytopes with a linked pair': 376}
RESULT: 680 polytopes, 498389 pairs of disjoint cycles compared, 4056 with non-zero linking number; mismatches of |lk|: 0; sign inconsistencies within a polytope: 0   (154 s)
