digraph {
 ratio="auto"
 size="16,8"
  node [shape = circle];
Michele -> Louis
Michele -> Rose
Julien -> Louis
Julien -> Rose
Gilles -> Jerome
Gilles -> Michele
Edith -> Julien
Edith -> Aude
Henri -> Gilles
Henri -> Alice
Martine -> Robert
Martine -> Edith
Clarisse -> Henri
Clarisse -> Martine
}