Rough Dentogram ( clustering based on segment distance )

    H 48  53  
   !  
   7-- L 44  47  
   !     
   !      H 38  43  
   !     !  
   6-----5-- L 32  37  
   !           
   4----------- L 23  31  
   !              
   !               L 65  73  
   !              !  
   !              9-- H 55  64  
   !              !     
   !              !      H 10  13  
   !              !     !  
   !              !     1-- L  1   9  
   !              !     !     
   8--------------3-----2----- L 14  22  
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