Rough Dentogram ( clustering based on segment distance )

   AH 66  69  
   !  
   8--AL 60  65  
   !     
   7-----AH 54  59  
   !        
   !        AL 48  53  
   !        !  
   !        5--AH 37  47  
   !        !     
   !        !     AL 16  24  
   !        !     !  
   6--------2-----1--AH  6  15  
   !                    
   !                    AL 32  36  
   !                    !  
   4--------------------3--AH 25  31  
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