echo 'digraph {

"Yuuko Kouzuki" -> "Mitsuko Kouzuki" [taillabel = "Younger Sister of"]
"Motoko Kouzuki" -> "Mitsuko Kouzuki" [taillabel = "Younger Sister of"]
"Mitsuko Kouzuki" -> "Motoko Kouzuki" [taillabel = "Younger Sister of"]
"Yuuko Kouzuki" -> "Motoko Kouzuki" [taillabel = "Younger Sister of"]
"Mitsuko Kouzuki" -> "Yuuko Kouzuki" [taillabel = "Younger Sister of"]
"Motoko Kouzuki" -> "Yuuko Kouzuki" [taillabel = "Younger Sister of"]
}' | dot -Tsvg > output.svg