Rough Dentogram ( clustering based on segment distance )

    L 49  58  
   !  
   8-- H 42  48  
   !     
   !      E 31  33  
   !     !  
   !     5-- E 22  24  
   !     !     
   !     !      L 18  21  
   !     !     !  
   !     3-----2-- H 13  17  
   !     !           
   !     4----------- L 25  30  
   !     !              
   7-----1-------------- L  1  10  
   !                       
   6----------------------- L 34  41  
  /
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