diff --git a/read_data.py b/read_data.py
index 93e276d..8b7851e 100644
--- a/read_data.py
+++ b/read_data.py
@@ -1,7 +1,9 @@
 import enum
 from io import TextIOWrapper
+import sys
 from typing import Iterable, NamedTuple, List, Sequence, TypeVar
 import json
+import argparse
 
 KoreanBase="[Ko, En] NER, POStag data/국문 NER, POS"
 EnglishBase="[Ko, En] NER, POStag data/영문 NER, POS"
@@ -170,20 +172,33 @@ def make_long_namedEntity(a,b,c):
 extracts and stores tags set from the given data. 
 """
 if __name__ == "__main__":
+    parser = argparse.ArgumentParser(description="create tags list")
+    parser.add_argument("--kind","-k",default='korean', help='kind of language: korean or english')
+    parser.add_argument("--stdout",action='store_true',help='print tags data to stdout')
+    parser.add_argument("--path",default="tags.json", help="path of tags data")
+    
+    args = parser.parse_args()
+
     from tqdm import tqdm
-    train, dev, test = readEnglishDataAll()
+    if args.kind == "korean" or args.kind == "ko" or args.kind == "kor":
+        train, dev, test = readEnglishDataAll()
+    elif args.kind == "english" or args.kind == "en" or args.kind =="eng":
+        train, dev, test = readKoreanDataAll()
+    else:
+        print("unknown language",file=sys.stderr)
+        exit(1)
     vocab = set()
     def getTags(lst: List[Sentence]):
         for s in tqdm(lst):
             for e in s.detail:
                 vocab.add(e)
-    print("get tags from train...")
+    print("get tags from train...",file=sys.stderr)
     getTags(train)
-    print("get tags from dev...")
+    print("get tags from dev...",file=sys.stderr)
     getTags(dev)
-    print("get tags from test...")
+    print("get tags from test...",file=sys.stderr)
     getTags(test)
-    print(vocab)
+    print(vocab,file=sys.stderr)
     for v in vocab:
         if v == "O":
             continue
@@ -200,6 +215,10 @@ if __name__ == "__main__":
     for v in vocab_list:
         tags.append({"name":v,"index":i})
         i += 1
-    print(tags)
-    with open("eng_tags.json","w",encoding="utf-8") as fp:
-        json.dump(tags,fp,ensure_ascii=False, indent=2)
\ No newline at end of file
+    print(tags,file=sys.stderr)
+    if args.stdout:
+        json.dump(tags,sys.stdout,ensure_ascii=False, indent=2)
+    else:
+        p = args.path
+        with open(p,"w",encoding="utf-8") as fp:
+            json.dump(tags,fp,ensure_ascii=False, indent=2)
\ No newline at end of file