Rough Dentogram ( clustering based on segment distance )

   FH 117 126 
   !  
   6--FL 112 116 
   !     
   !     FL 103 111 
   !     !  
   5-----4--FH 102 102 
   !           
   7-----------FL 127 132 
   !              
   3--------------FH  87 102 
   !                 
   !                 FE 143 147 
   !                 !  
   !                 10-FE 133 137 
   !                 !     
   !                 9-----FL  72  80 
   !                 !        
   !                 8--------FL  81  86 
   !                 !           
   2-----------------1-----------FL 138 142 
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