diff --git a/src/tre/tre b/src/tre/tre
index 5ab399a..b248ca7 100755
--- a/src/tre/tre
+++ b/src/tre/tre
@@ -277,11 +277,11 @@ def parsegraph(nodes)
     $len[i] = dgp[1].to_i
     $sat << i if parts[1]=="s"
 
-    $arcs |= parts[2].split(',').map{ |a| case a 
-                                          when /\-\-(\w+)-(\d+)\((\d+)~(\d+)\)/
+    $arcs |= parts[2].scan(/\([^()]+\)/).map{ |a| case a 
+                                          when /\-\-(\w+):(\d+)/
                                             # [i, $2.to_i, $1, $3.to_i, $4.to_i]
                                             [i, $2.to_i, $1, 0, 0]
-                                          when /\+\+(\w+)-(\d+)\((\d+)~(\d+)\)/
+                                          when /\+\+(\w+):(\d+)/
                                             # [$2.to_i, i, $1, $3.to_i, $4.to_i]
                                             [$2.to_i, i, $1, 0, 0]
                                           end }
@@ -379,6 +379,7 @@ end
 def buildR(min, max, tree)
   if $DEBUG then print "buildR--#{min}--#{max}--#{tree.inspect}\n" end
   trees=[]
+  print $arcs
   for arc in $arcs.select{|a| a[0]==max && $vis.include?([min,a[1]]) }
     if $DEBUG then print "ARC: #{arc.inspect}\n" end
     for r in buildR(arc[1],arc[0],tree+[arc])                 #!!! buildR(a[1],a[3],tree+[a])