echo 'digraph {

"Fan A" -> "Fan C" [taillabel = "Friend of"]
"Fan B" -> "Fan C" [taillabel = "Friend of"]
"Fan B" -> "Fan A" [taillabel = "Friend of"]
"Fan C" -> "Fan A" [taillabel = "Friend of"]
"Fan A" -> "Fan B" [taillabel = "Friend of"]
"Fan C" -> "Fan B" [taillabel = "Friend of"]
}' | dot -Tsvg > output.svg