graph G {
  node [shape=box];
"貫之" -- "躬恒" [weight=.19 label=.19];
"貫之" -- "遍昭" [weight=.12 label=.12];
"貫之" -- "素性" [weight=.12 label=.12];
"貫之" -- "小町" [weight=.06 label=.06];
"貫之" -- "伊勢" [weight=.14 label=.14];
"躬恒" -- "遍昭" [weight=.20 label=.20];
"躬恒" -- "素性" [weight=.15 label=.15];
"躬恒" -- "小町" [weight=.06 label=.06];
"躬恒" -- "伊勢" [weight=.17 label=.17];
"遍昭" -- "素性" [weight=.22 label=.22];
"遍昭" -- "小町" [weight=.10 label=.10];
"遍昭" -- "伊勢" [weight=.14 label=.14];
"素性" -- "小町" [weight=.10 label=.10];
"素性" -- "伊勢" [weight=.23 label=.23];
"小町" -- "伊勢" [weight=.16 label=.16];
}