Rough Dentogram ( clustering based on segment distance )

    L 92  95  
   !  
   11- H 69  77  
   !     
   !      L 83  91  
   !     !  
   9-----10- H 79  82  
   !           
   !            H 96 109  
   !           !  
   !           12- H 11  21  
   !           !     
   8-----------4----- L  1   9  
   !                    
   !                     L 64  68  
   !                    !  
   !                    7-- L 40  49  
   !                    !     
   !                    !      H 58  63  
   !                    !     !  
   !                    5-----6-- L 50  57  
   !                    !           
   !                    !            L 31  39  
   !                    !           !  
   2--------------------1-----------3-- L 22  30  
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