diff --git a/jp_readings.py b/jp_readings.py
index 345e6ff..7092353 100644
--- a/jp_readings.py
+++ b/jp_readings.py
@@ -4,7 +4,7 @@ from fugashi_parser import *
 
 def main():
     parser = argparse.ArgumentParser()
-    parser.add_argument("--vocab-file", required=True)
+    parser.add_argument("--vocab-file", required=False)
     parser.add_argument("text", nargs="*")
     args = parser.parse_args()
 
@@ -13,12 +13,15 @@ def main():
     else:
         text = sys.stdin.read()
 
-    vocab = load_vocab(args.vocab_file)
+    #vocab = load_vocab(args.vocab_file)
+    vocab = {}
     result = analyze(text, vocab)
-    save_vocab(args.vocab_file, vocab)
+    #save_vocab(args.vocab_file, vocab)
 
     result["vocab_file"] = args.vocab_file
     print(json.dumps(result, ensure_ascii=False, indent=2))
+    print(json.dumps(list(vocab), ensure_ascii=False, indent=2))
+    #print(vocab)
 
 
 if __name__ == "__main__":