Rough Dentogram ( clustering based on segment distance )

   AH389 396  
   !  
   5--AH374 389  
   !     
   !     AL351 358  
   !     !  
   !     2--AH336 350  
   !     !     
   !     3-----AH359 374  
   !     !        
   4-----1--------AH321 336  
  /
 /