diff --git a/ChangeLog.md b/ChangeLog.md
index c3c5c89..1504ae9 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -2,7 +2,11 @@
 
 ## next version
 
+api changes:
+
++ override Cut functions, add location information into Word results;
 + remove LevelSegment;
++ remove Jieba::Locate;
 
 ## v4.6.0
 
diff --git a/include/cppjieba/FullSegment.hpp b/include/cppjieba/FullSegment.hpp
index d859e81..fc7aab2 100644
--- a/include/cppjieba/FullSegment.hpp
+++ b/include/cppjieba/FullSegment.hpp
@@ -27,6 +27,12 @@ class FullSegment: public SegmentBase {
   }
   void Cut(const string& sentence, 
         vector<string>& words) const {
+    vector<Word> tmp;
+    Cut(sentence, tmp);
+    GetStringsFromWords(tmp, words);
+  }
+  void Cut(const string& sentence, 
+        vector<Word>& words) const {
     PreFilter pre_filter(symbols_, sentence);
     PreFilter::Range range;
     vector<WordRange> wrs;
@@ -37,7 +43,7 @@ class FullSegment: public SegmentBase {
     }
     words.clear();
     words.reserve(wrs.size());
-    GetStringsFromWordRanges(sentence, wrs, words);
+    GetWordsFromWordRanges(sentence, wrs, words);
   }
   void Cut(RuneStrArray::const_iterator begin, 
         RuneStrArray::const_iterator end, 
diff --git a/include/cppjieba/HMMSegment.hpp b/include/cppjieba/HMMSegment.hpp
index 0038a49..d515c04 100644
--- a/include/cppjieba/HMMSegment.hpp
+++ b/include/cppjieba/HMMSegment.hpp
@@ -25,6 +25,12 @@ class HMMSegment: public SegmentBase {
 
   void Cut(const string& sentence, 
         vector<string>& words) const {
+    vector<Word> tmp;
+    Cut(sentence, tmp);
+    GetStringsFromWords(tmp, words);
+  }
+  void Cut(const string& sentence, 
+        vector<Word>& words) const {
     PreFilter pre_filter(symbols_, sentence);
     PreFilter::Range range;
     vector<WordRange> wrs;
@@ -35,7 +41,7 @@ class HMMSegment: public SegmentBase {
     }
     words.clear();
     words.reserve(wrs.size());
-    GetStringsFromWordRanges(sentence, wrs, words);
+    GetWordsFromWordRanges(sentence, wrs, words);
   }
   void Cut(RuneStrArray::const_iterator begin, RuneStrArray::const_iterator end, vector<WordRange>& res) const {
     RuneStrArray::const_iterator left = begin;
diff --git a/include/cppjieba/Jieba.hpp b/include/cppjieba/Jieba.hpp
index 0417edb..12f4358 100644
--- a/include/cppjieba/Jieba.hpp
+++ b/include/cppjieba/Jieba.hpp
@@ -32,35 +32,33 @@ class Jieba {
   void Cut(const string& sentence, vector<string>& words, bool hmm = true) const {
     mix_seg_.Cut(sentence, words, hmm);
   }
+  void Cut(const string& sentence, vector<Word>& words, bool hmm = true) const {
+    mix_seg_.Cut(sentence, words, hmm);
+  }
   void CutAll(const string& sentence, vector<string>& words) const {
     full_seg_.Cut(sentence, words);
   }
+  void CutAll(const string& sentence, vector<Word>& words) const {
+    full_seg_.Cut(sentence, words);
+  }
   void CutForSearch(const string& sentence, vector<string>& words, bool hmm = true) const {
     query_seg_.Cut(sentence, words, hmm);
   }
+  void CutForSearch(const string& sentence, vector<Word>& words, bool hmm = true) const {
+    query_seg_.Cut(sentence, words, hmm);
+  }
   void CutHMM(const string& sentence, vector<string>& words) const {
     hmm_seg_.Cut(sentence, words);
   }
-  //void CutLevel(const string& sentence, vector<string>& words) const {
-  //  level_seg_.Cut(sentence, words);
-  //}
-  //void CutLevel(const string& sentence, vector<pair<string, size_t> >& words) const {
-  //  level_seg_.Cut(sentence, words);
-  //}
+  void CutHMM(const string& sentence, vector<Word>& words) const {
+    hmm_seg_.Cut(sentence, words);
+  }
   void CutSmall(const string& sentence, vector<string>& words, size_t max_word_len) const {
     mp_seg_.Cut(sentence, words, max_word_len);
   }
-  //static void Locate(const vector<string>& words, vector<LocWord>& loc_words) {
-  //  loc_words.resize(words.size());
-  //  size_t begin = 0;
-  //  for (size_t i = 0; i < words.size(); i++) {
-  //    size_t len = TransCode::Decode(words[i]).size();
-  //    loc_words[i].word = words[i];
-  //    loc_words[i].begin = begin;
-  //    loc_words[i].end = loc_words[i].begin + len;
-  //    begin = loc_words[i].end;
-  //  }
-  //}
+  void CutSmall(const string& sentence, vector<Word>& words, size_t max_word_len) const {
+    mp_seg_.Cut(sentence, words, max_word_len);
+  }
   
   void Tag(const string& sentence, vector<pair<string, string> >& words) const {
     pos_tagger_.Tag(sentence, words);
diff --git a/include/cppjieba/MPSegment.hpp b/include/cppjieba/MPSegment.hpp
index 2bffeb8..07e1223 100644
--- a/include/cppjieba/MPSegment.hpp
+++ b/include/cppjieba/MPSegment.hpp
@@ -28,6 +28,13 @@ class MPSegment: public SegmentBase {
   void Cut(const string& sentence, 
         vector<string>& words, 
         size_t max_word_len = MAX_WORD_LENGTH) const {
+    vector<Word> tmp;
+    Cut(sentence, tmp, max_word_len);
+    GetStringsFromWords(tmp, words);
+  }
+  void Cut(const string& sentence, 
+        vector<Word>& words, 
+        size_t max_word_len = MAX_WORD_LENGTH) const {
     PreFilter pre_filter(symbols_, sentence);
     PreFilter::Range range;
     vector<WordRange> wrs;
@@ -38,7 +45,7 @@ class MPSegment: public SegmentBase {
     }
     words.clear();
     words.reserve(wrs.size());
-    GetStringsFromWordRanges(sentence, wrs, words);
+    GetWordsFromWordRanges(sentence, wrs, words);
   }
   void Cut(RuneStrArray::const_iterator begin,
            RuneStrArray::const_iterator end,
diff --git a/include/cppjieba/MixSegment.hpp b/include/cppjieba/MixSegment.hpp
index 82f078b..ced8849 100644
--- a/include/cppjieba/MixSegment.hpp
+++ b/include/cppjieba/MixSegment.hpp
@@ -21,6 +21,11 @@ class MixSegment: public SegmentBase {
   }
 
   void Cut(const string& sentence, vector<string>& words, bool hmm = true) const {
+    vector<Word> tmp;
+    Cut(sentence, tmp, hmm);
+    GetStringsFromWords(tmp, words);
+  }
+  void Cut(const string& sentence, vector<Word>& words, bool hmm = true) const {
     PreFilter pre_filter(symbols_, sentence);
     PreFilter::Range range;
     vector<WordRange> wrs;
@@ -31,7 +36,7 @@ class MixSegment: public SegmentBase {
     }
     words.clear();
     words.reserve(wrs.size());
-    GetStringsFromWordRanges(sentence, wrs, words);
+    GetWordsFromWordRanges(sentence, wrs, words);
   }
 
   void Cut(RuneStrArray::const_iterator begin, RuneStrArray::const_iterator end, vector<WordRange>& res, bool hmm) const {
diff --git a/include/cppjieba/QuerySegment.hpp b/include/cppjieba/QuerySegment.hpp
index 0b04ce6..6783bd9 100644
--- a/include/cppjieba/QuerySegment.hpp
+++ b/include/cppjieba/QuerySegment.hpp
@@ -27,6 +27,11 @@ class QuerySegment: public SegmentBase {
   ~QuerySegment() {
   }
   void Cut(const string& sentence, vector<string>& words, bool hmm = true) const {
+    vector<Word> tmp;
+    Cut(sentence, tmp, hmm);
+    GetStringsFromWords(tmp, words);
+  }
+  void Cut(const string& sentence, vector<Word>& words, bool hmm = true) const {
     PreFilter pre_filter(symbols_, sentence);
     PreFilter::Range range;
     vector<WordRange> wrs;
@@ -37,7 +42,7 @@ class QuerySegment: public SegmentBase {
     }
     words.clear();
     words.reserve(wrs.size());
-    GetStringsFromWordRanges(sentence, wrs, words);
+    GetWordsFromWordRanges(sentence, wrs, words);
   }
   void Cut(RuneStrArray::const_iterator begin, RuneStrArray::const_iterator end, vector<WordRange>& res, bool hmm) const {
     //use mix Cut first
diff --git a/include/cppjieba/Unicode.hpp b/include/cppjieba/Unicode.hpp
index 923fcdb..1f2aec2 100644
--- a/include/cppjieba/Unicode.hpp
+++ b/include/cppjieba/Unicode.hpp
@@ -5,6 +5,7 @@
 #include <stdlib.h>
 #include <string>
 #include <vector>
+#include <ostream>
 #include "limonp/LocalVector.hpp"
 
 namespace cppjieba {
@@ -14,6 +15,18 @@ using std::vector;
 
 typedef uint32_t Rune;
 
+struct Word {
+  string word;
+  uint32_t offset;
+  Word(const string& w, uint32_t o)
+   : word(w), offset(o) {
+  }
+}; // struct Word
+
+inline std::ostream& operator << (std::ostream& os, const Word& w) {
+  return os << "{\"word\": \"" << w.word << "\", \"offset\": " << w.offset << "}";
+}
+
 struct RuneStr {
   Rune rune;
   uint32_t offset;
@@ -162,24 +175,37 @@ inline Unicode DecodeRunesInString(const string& s) {
 
 
 // [left, right]
+inline Word GetWordFromRunes(const string& s, RuneStrArray::const_iterator left, RuneStrArray::const_iterator right) {
+  assert(right->offset >= left->offset);
+  uint32_t len = right->offset - left->offset + right->len;
+  return Word(s.substr(left->offset, len), left->offset);
+}
+
 inline string GetStringFromRunes(const string& s, RuneStrArray::const_iterator left, RuneStrArray::const_iterator right) {
   assert(right->offset >= left->offset);
   uint32_t len = right->offset - left->offset + right->len;
   return s.substr(left->offset, len);
 }
 
-inline void GetStringsFromWordRanges(const string& s, const vector<WordRange>& wrs, vector<string>& words) {
+inline void GetWordsFromWordRanges(const string& s, const vector<WordRange>& wrs, vector<Word>& words) {
   for (size_t i = 0; i < wrs.size(); i++) {
-    words.push_back(GetStringFromRunes(s, wrs[i].left, wrs[i].right));
+    words.push_back(GetWordFromRunes(s, wrs[i].left, wrs[i].right));
   }
 }
 
-inline vector<string> GetStringsFromWordRanges(const string& s, const vector<WordRange>& wrs) {
-  vector<string> result;
-  GetStringsFromWordRanges(s, wrs, result);
+inline vector<Word> GetWordsFromWordRanges(const string& s, const vector<WordRange>& wrs) {
+  vector<Word> result;
+  GetWordsFromWordRanges(s, wrs, result);
   return result;
 }
 
+inline void GetStringsFromWords(const vector<Word>& words, vector<string>& strs) {
+  strs.resize(words.size());
+  for (size_t i = 0; i < words.size(); ++i) {
+    strs[i] = words[i].word;
+  }
+}
+
 } // namespace cppjieba
 
 #endif // CPPJIEBA_UNICODE_H
diff --git a/test/unittest/jieba_test.cpp b/test/unittest/jieba_test.cpp
index 14fa2b2..c5897be 100644
--- a/test/unittest/jieba_test.cpp
+++ b/test/unittest/jieba_test.cpp
@@ -37,35 +37,45 @@ TEST(JiebaTest, Test1) {
   result << words;
   ASSERT_EQ("[\"他\", \"来到\", \"了\", \"网易\", \"杭研\", \"大厦\"]", result);
 
-  //jieba.CutLevel("南京市长江大桥", words);
-  //result << words;
-  //ASSERT_EQ("[\"南京市\", \"长江大桥\", \"南京\", \"长江\", \"大桥\"]", result);
+}
+TEST(JiebaTest, WordTest) {
+  cppjieba::Jieba jieba("../dict/jieba.dict.utf8",
+                            "../dict/hmm_model.utf8",
+                            "../dict/user.dict.utf8");
+  vector<Word> words;
+  string result;
 
-  //vector<pair<string, size_t> > word_levels;
-  //jieba.CutLevel("南京市长江大桥", word_levels);
-  //result << word_levels;
-  //ASSERT_EQ("[\"南京市:0\", \"长江大桥:0\", \"南京:1\", \"长江:1\", \"大桥:1\"]", result);
+  jieba.Cut("他来到了网易杭研大厦", words);
+  result << words;
+  ASSERT_EQ("[\"{\"word\": \"\xE4\xBB\x96\", \"offset\": 0}\", \"{\"word\": \"\xE6\x9D\xA5\xE5\x88\xB0\", \"offset\": 3}\", \"{\"word\": \"\xE4\xBA\x86\", \"offset\": 9}\", \"{\"word\": \"\xE7\xBD\x91\xE6\x98\x93\", \"offset\": 12}\", \"{\"word\": \"\xE6\x9D\xAD\xE7\xA0\x94\", \"offset\": 18}\", \"{\"word\": \"\xE5\xA4\xA7\xE5\x8E\xA6\", \"offset\": 24}\"]", result);
 
-  //vector<Jieba::LocWord> loc_words;
-  //jieba.Cut("南京市长江大桥", words);
-  //jieba.Locate(words, loc_words);
-  //ASSERT_EQ(loc_words.size(), 2u);
-  //ASSERT_EQ(loc_words[0].word, "南京市");
-  //ASSERT_EQ(loc_words[0].begin, 0u);
-  //ASSERT_EQ(loc_words[0].end, 3u);
-  //ASSERT_EQ(loc_words[1].word, "长江大桥");
-  //ASSERT_EQ(loc_words[1].begin, 3u);
-  //ASSERT_EQ(loc_words[1].end, 7u);
+  jieba.Cut("我来自北京邮电大学。", words, false);
+  result << words;
+  //ASSERT_EQ("[\"我\", \"来自\", \"北京邮电大学\", \"。\"]", result);
+  ASSERT_EQ("[\"{\"word\": \"\xE6\x88\x91\", \"offset\": 0}\", \"{\"word\": \"\xE6\x9D\xA5\xE8\x87\xAA\", \"offset\": 3}\", \"{\"word\": \"\xE5\x8C\x97\xE4\xBA\xAC\xE9\x82\xAE\xE7\x94\xB5\xE5\xA4\xA7\xE5\xAD\xA6\", \"offset\": 9}\", \"{\"word\": \"\xE3\x80\x82\", \"offset\": 27}\"]", result);
 
-  //vector<pair<string, string> > tagres;
-  //jieba.Tag("iPhone6手机的最大特点是很容易弯曲。", tagres);
-  //result << tagres;
-  //ASSERT_EQ("[\"iPhone6:eng\", \"手机:n\", \"的:uj\", \"最大:a\", \"特点:n\", \"是:v\", \"很:zg\", \"容易:a\", \"弯曲:v\", \"。:x\"]", result);
+  jieba.CutSmall("南京市长江大桥", words, 3);
+  //ASSERT_EQ("[\"南京市\", \"长江\", \"大桥\"]", result << words);
+  ASSERT_EQ("[\"{\"word\": \"\xE5\x8D\x97\xE4\xBA\xAC\xE5\xB8\x82\", \"offset\": 0}\", \"{\"word\": \"\xE9\x95\xBF\xE6\xB1\x9F\", \"offset\": 9}\", \"{\"word\": \"\xE5\xA4\xA7\xE6\xA1\xA5\", \"offset\": 15}\"]", result << words);
 
-  //vector<pair<string, double> > keywordres;
-  //jieba.Extract("我是拖拉机学院手扶拖拉机专业的。不用多久，我就会升职加薪，当上CEO，走上人生巅峰。", keywordres, 5);
-  //result << keywordres;
-  //ASSERT_EQ(result, "[\"CEO:11.7392\", \"升职:10.8562\", \"加薪:10.6426\", \"手扶拖拉机:10.0089\", \"巅峰:9.49396\"]");
+  jieba.CutHMM("我来自北京邮电大学。。。学号123456", words);
+  result << words;
+  ASSERT_EQ("[\"{\"word\": \"\xE6\x88\x91\xE6\x9D\xA5\", \"offset\": 0}\", \"{\"word\": \"\xE8\x87\xAA\xE5\x8C\x97\xE4\xBA\xAC\", \"offset\": 6}\", \"{\"word\": \"\xE9\x82\xAE\xE7\x94\xB5\xE5\xA4\xA7\xE5\xAD\xA6\", \"offset\": 15}\", \"{\"word\": \"\xE3\x80\x82\", \"offset\": 27}\", \"{\"word\": \"\xE3\x80\x82\", \"offset\": 30}\", \"{\"word\": \"\xE3\x80\x82\", \"offset\": 33}\", \"{\"word\": \"\xE5\xAD\xA6\xE5\x8F\xB7\", \"offset\": 36}\", \"{\"word\": \"123456\", \"offset\": 42}\"]", result);
+
+  jieba.Cut("我来自北京邮电大学。。。学号123456，用AK47", words);
+  result << words;
+  //ASSERT_EQ("[\"我\", \"来自\", \"北京邮电大学\", \"。\", \"。\", \"。\", \"学号\", \"123456\", \"，\", \"用\", \"AK47\"]", result);
+  ASSERT_EQ("[\"{\"word\": \"\xE6\x88\x91\", \"offset\": 0}\", \"{\"word\": \"\xE6\x9D\xA5\xE8\x87\xAA\", \"offset\": 3}\", \"{\"word\": \"\xE5\x8C\x97\xE4\xBA\xAC\xE9\x82\xAE\xE7\x94\xB5\xE5\xA4\xA7\xE5\xAD\xA6\", \"offset\": 9}\", \"{\"word\": \"\xE3\x80\x82\", \"offset\": 27}\", \"{\"word\": \"\xE3\x80\x82\", \"offset\": 30}\", \"{\"word\": \"\xE3\x80\x82\", \"offset\": 33}\", \"{\"word\": \"\xE5\xAD\xA6\xE5\x8F\xB7\", \"offset\": 36}\", \"{\"word\": \"123456\", \"offset\": 42}\", \"{\"word\": \"\xEF\xBC\x8C\", \"offset\": 48}\", \"{\"word\": \"\xE7\x94\xA8\", \"offset\": 51}\", \"{\"word\": \"AK47\", \"offset\": 54}\"]", result);
+
+  jieba.CutAll("我来自北京邮电大学", words);
+  result << words;
+  //ASSERT_EQ(result, "[\"我\", \"来自\", \"北京\", \"北京邮电\", \"北京邮电大学\", \"邮电\", \"邮电大学\", \"电大\", \"大学\"]");
+  ASSERT_EQ("[\"{\"word\": \"\xE6\x88\x91\", \"offset\": 0}\", \"{\"word\": \"\xE6\x9D\xA5\xE8\x87\xAA\", \"offset\": 3}\", \"{\"word\": \"\xE5\x8C\x97\xE4\xBA\xAC\", \"offset\": 9}\", \"{\"word\": \"\xE5\x8C\x97\xE4\xBA\xAC\xE9\x82\xAE\xE7\x94\xB5\", \"offset\": 9}\", \"{\"word\": \"\xE5\x8C\x97\xE4\xBA\xAC\xE9\x82\xAE\xE7\x94\xB5\xE5\xA4\xA7\xE5\xAD\xA6\", \"offset\": 9}\", \"{\"word\": \"\xE9\x82\xAE\xE7\x94\xB5\", \"offset\": 15}\", \"{\"word\": \"\xE9\x82\xAE\xE7\x94\xB5\xE5\xA4\xA7\xE5\xAD\xA6\", \"offset\": 15}\", \"{\"word\": \"\xE7\x94\xB5\xE5\xA4\xA7\", \"offset\": 18}\", \"{\"word\": \"\xE5\xA4\xA7\xE5\xAD\xA6\", \"offset\": 21}\"]", result);
+
+  jieba.CutForSearch("他来到了网易杭研大厦", words);
+  result << words;
+  //ASSERT_EQ("[\"他\", \"来到\", \"了\", \"网易\", \"杭研\", \"大厦\"]", result);
+  ASSERT_EQ("[\"{\"word\": \"\xE4\xBB\x96\", \"offset\": 0}\", \"{\"word\": \"\xE6\x9D\xA5\xE5\x88\xB0\", \"offset\": 3}\", \"{\"word\": \"\xE4\xBA\x86\", \"offset\": 9}\", \"{\"word\": \"\xE7\xBD\x91\xE6\x98\x93\", \"offset\": 12}\", \"{\"word\": \"\xE6\x9D\xAD\xE7\xA0\x94\", \"offset\": 18}\", \"{\"word\": \"\xE5\xA4\xA7\xE5\x8E\xA6\", \"offset\": 24}\"]", result);
 }
 
 TEST(JiebaTest, InsertUserWord) {