Rough Dentogram ( clustering based on segment distance )

   CH 116 121 
   !  
   8--CH 101 116 
   !     
   !     CL  83  85 
   !     !  
   !     5--CL  52  60 
   !     !     
   !     !     CL  74  82 
   !     !     !  
   !     !     4--CH  62  73 
   !     !     !     
   !     2-----3-----CH  39  51 
   !     !              
   !     6--------------CH  86 101 
   !     !                 
   7-----1-----------------CH  24  39 
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