diff --git a/src/LR0.cpp b/src/LR0.cpp
index 2c152e73..6bc660a7 100644
--- a/src/LR0.cpp
+++ b/src/LR0.cpp
@@ -53,9 +53,22 @@ void LR0::createParseTables (const Grammar& grammar)
     }
   }
 
+  // TODO Add all items from augmented grammar.
+  std::vector <std::pair <int, int>> items;
+  // TODO Add augmented grammar to items.
+
+  // TODO Add new states.
+  while (expandNonTerminals ())
+    ;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+bool LR0::expandNonTerminals ()
+{
 
 
 
+  return false;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
diff --git a/src/LR0.h b/src/LR0.h
index 5781c806..97106c3d 100644
--- a/src/LR0.h
+++ b/src/LR0.h
@@ -40,6 +40,9 @@ public:
   void debug (bool);
   std::string dump () const;
 
+private:
+  bool expandNonTerminals ();
+
 private:
   //        state         column        result
   //        |              |            |