Rough Dentogram ( clustering based on segment distance )

    L 83  91  
   !  
   9-- H 74  82  
   !     
   !      L 58  63  
   !     !  
   8-----6-- H 50  57  
   !           
   !            H 98 108  
   !           !  
   !           11- H  4  10  
   !           !     
   !           !      L 92  97  
   !           !     !  
   7-----------10----1-- H 64  72  
   !                       
   !                        L 38  47  
   !                       !  
   !                       4-- L 29  37  
   !                       !     
   !                       !      L 20  28  
   !                       !     !  
   5-----------------------3-----2-- L 11  19  
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