echo 'digraph {

"Neptune" -> "Purple Heart" [taillabel = "HDD form of "]
"Purple Heart" -> "Neptune" [taillabel = "Human form of"]
"Noire" -> "Neptune" [taillabel = "Friend of"]
"Vert" -> "Neptune" [taillabel = "Friend of"]
"Blanc" -> "Neptune" [taillabel = "Friend of"]
"Nepgear" -> "Neptune" [taillabel = "Sister of"]
}' | dot -Tsvg > output.svg