Rough Dentogram ( clustering based on segment distance )

    H 88  88  
   !  
   6-- L 35  38  
   !     
   7----- L 89  97  
   !        
   !         H 39  54  
   !        !  
   1--------2-- H 23  34  
   !              
   5-------------- H 73  88  
   !                 
   !                  L 66  72  
   !                 !  
   3-----------------4-- H 54  65  
  /
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