Rough Dentogram ( clustering based on segment distance )

   AL 39  41  
   !  
   4--AH 28  38  
   !     
   !     AL 23  27  
   !     !  
   3-----2--AH 10  22  
   !           
   1-----------AL  0   8  
   !              
   5--------------AH 42  57  
   !                 
   6-----------------AH 57  63  
  /
 /