diff --git a/sample/SampleKanaConverter.java b/sample/SampleKanaConverter.java
index 4ace90b4..7b652305 100644
--- a/sample/SampleKanaConverter.java
+++ b/sample/SampleKanaConverter.java
@@ -22,5 +22,10 @@ public static void main(String[] args)
         // Convert and print
         String output_string = KanaConverter.convertKana(input_string, sample_conversion_ops);
         System.out.println(output_string);
+          System.out.println("aa");
+         System.out.println("aa");
+         System.out.println("aa");
+         System.out.println("aa");
+         System.out.println("aa");
     }
 }