Rough Dentogram ( clustering based on segment distance )

   HL  72  75 
   !  
   13-HL  26  32 
   !     
   !     HE  76  81 
   !     !  
   !     14-HE  18  25 
   !     !     
   6-----4-----HE   3   7 
   !              
   !              HE  44  51 
   !              !  
   !              8--HE  33  40 
   !              !     
   !              16----HE  87  94 
   !              !        
   !              !        HL  59  65 
   !              !        !  
   !              !        11-HE  57  58 
   !              !        !     
   !              !        12----HE  66  71 
   !              !        !        
   9--------------5--------10-------HL  52  56 
   !                                   
   17----------------------------------HL  96 105 
   !                                      
   !                                      HL  82  86 
   !                                      !  
   !                                      15-HL  13  17 
   !                                      !     
   !                                      !     HE 108 112 
   !                                      !     !  
   !                                      !     18-HL   8  10 
   !                                      !     !     
   !                                      3-----2-----HE  11  12 
   !                                      !              
   1--------------------------------------7--------------HL  41  43 
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