Rough Dentogram ( clustering based on segment distance )

   AL 71  73  
   !  
   6--AH 65  70  
   !     
   7-----AH 74  82  
   !        
   !        AL 59  64  
   !        !  
   5--------4--AH 46  58  
   !              
   !              AL 28  36  
   !              !  
   !              1--AH 14  27  
   !              !     
   3--------------2-----AL 37  45  
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