assi 
   (( segid "   A" and resid 83   and name  HN  ))
   (( segid "   A" and resid 81   and name  HN  ))
      2.900     1.100     1.100

 assi 
   (( segid "   A" and resid 83   and name  HN  ))
   (( segid "   A" and resid 82   and name  HN  ))
      2.900     1.100     1.100