Rough Dentogram ( clustering based on segment distance )

   BE  79  80 
   !  
   8--BE  70  71 
   !     
   7-----BL  72  78 
   !        
   9--------BH  82  88 
   !           
   !           BL  46  54 
   !           !  
   6-----------3--BL  37  45 
   !                 
   10----------------BL  89  98 
   !                    
   !                    BL  59  67 
   !                    !  
   4--------------------5--BH  55  58 
   !                          
   2--------------------------BL  28  36 
   !                             
   1-----------------------------BL  19  27 
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