diff --git a/trunk/ripnews/set/intspan.rb b/trunk/ripnews/set/intspan.rb
index 9bd36a6..ee49622 100644
--- a/trunk/ripnews/set/intspan.rb
+++ b/trunk/ripnews/set/intspan.rb
@@ -227,10 +227,9 @@ def run_list
 
 		while(edges.length>0)
 			print "edges leng: ", @set["edges"].length, "\n" if Debuglevel > 0
-			lower = edges[0]
-			upper = edges[1]
+			lower = edges.delete_at(0)
+			upper = edges.delete_at(0)
 			print "Lower: \"#{lower}\" Upper: \"#{upper}\"\n" if Debuglevel > 0
-			edges = edges.slice(2..edges.length)
 
 			if ((lower.to_s <=> '(')!=0 and
 				(upper.to_s <=> ')')!=0 and