# six nodes, and one long edge
[ Oranienburg ] -> [ Henningsdorf ]
[ Henningsdorf ] -> [ Strausberg ]
[ Oranienburg ] -> [ Wittenberge ]
[ Strausberg ] -> [ Herzberg ]
[ Strausberg ] -> [ Neuruppin ]
[ Wittenberge ] -> [ Herzberg ]
# six nodes, and one long edge
[ Oranienburg ] -> [ Henningsdorf ]
[ Henningsdorf ] -> [ Strausberg ]
[ Oranienburg ] -> [ Wittenberge ]
[ Strausberg ] -> [ Herzberg ]
[ Strausberg ] -> [ Neuruppin ]
[ Wittenberge ] -> [ Herzberg ]