diff --git a/analyse/idf.go b/analyse/idf.go
index f4ce055..7e021b5 100644
--- a/analyse/idf.go
+++ b/analyse/idf.go
@@ -11,7 +11,7 @@ type IDFLoader struct {
 	freqs   []float64
 }
 
-func (l *IDFLoader) AddEntry(entry *jiebago.Entry) {
+func (l *IDFLoader) AddEntry(entry jiebago.Entry) {
 	l.IDFFreq[entry.Word] = entry.Freq
 	l.freqs = append(l.freqs, entry.Freq)
 }
diff --git a/analyse/stopwords.go b/analyse/stopwords.go
index 112cece..b0a39fe 100644
--- a/analyse/stopwords.go
+++ b/analyse/stopwords.go
@@ -40,7 +40,7 @@ type StopWordLoader struct {
 	stopWords map[string]int
 }
 
-func (s *StopWordLoader) AddEntry(entry *jiebago.Entry) {
+func (s *StopWordLoader) AddEntry(entry jiebago.Entry) {
 	s.stopWords[entry.Word] = 1
 }
 
diff --git a/dictionary.go b/dictionary.go
index b86dac3..630ad3d 100644
--- a/dictionary.go
+++ b/dictionary.go
@@ -1,21 +1,13 @@
 package jiebago
 
-type Pair struct {
+type Entry struct {
 	Word string
 	Flag string
-}
-
-type Entry struct {
-	*Pair
 	Freq float64
 }
 
-func NewEntry() *Entry {
-	return &Entry{new(Pair), 0.0}
-}
-
 type DictLoader interface {
-	AddEntry(*Entry)
+	AddEntry(Entry)
 }
 
 type Cacher interface {
diff --git a/jieba.go b/jieba.go
index 0eb7420..d0b606e 100644
--- a/jieba.go
+++ b/jieba.go
@@ -55,7 +55,7 @@ type Jieba struct {
 	Freq  map[string]float64
 }
 
-func (j *Jieba) AddEntry(entry *Entry) {
+func (j *Jieba) AddEntry(entry Entry) {
 	j.Add(entry.Word, entry.Freq)
 }
 
diff --git a/posseg/posseg.go b/posseg/posseg.go
index 60c89dc..d05568d 100644
--- a/posseg/posseg.go
+++ b/posseg/posseg.go
@@ -16,8 +16,8 @@ var (
 	reSkipInternal = regexp.MustCompile(`(\r\n|\s)`)
 )
 
-type WordTag struct {
-	Word, Tag string
+type Pair struct {
+	Word, Flag string
 }
 
 type Posseg struct {
@@ -25,7 +25,7 @@ type Posseg struct {
 	Flag map[string]string
 }
 
-func (p *Posseg) AddEntry(entry *jiebago.Entry) {
+func (p *Posseg) AddEntry(entry jiebago.Entry) {
 	if len(entry.Flag) > 0 {
 		p.Flag[entry.Word] = strings.TrimSpace(entry.Flag)
 	}
@@ -49,8 +49,8 @@ func (p *Posseg) LoadUserDict(dictFilePath string) error {
 	return jiebago.LoadDict(p, dictFilePath, true)
 }
 
-func (p *Posseg) cutDetailInternal(sentence string) chan WordTag {
-	result := make(chan WordTag)
+func (p *Posseg) cutDetailInternal(sentence string) chan Pair {
+	result := make(chan Pair)
 
 	go func() {
 		runes := []rune(sentence)
@@ -63,23 +63,23 @@ func (p *Posseg) cutDetailInternal(sentence string) chan WordTag {
 			case 'B':
 				begin = i
 			case 'E':
-				result <- WordTag{string(runes[begin : i+1]), string(pos[1:])}
+				result <- Pair{string(runes[begin : i+1]), string(pos[1:])}
 				next = i + 1
 			case 'S':
-				result <- WordTag{string(char), string(pos[1:])}
+				result <- Pair{string(char), string(pos[1:])}
 				next = i + 1
 			}
 		}
 		if next < len(runes) {
-			result <- WordTag{string(runes[next:]), string(posList[next][1:])}
+			result <- Pair{string(runes[next:]), string(posList[next][1:])}
 		}
 		close(result)
 	}()
 	return result
 }
 
-func (p *Posseg) cutDetail(sentence string) chan WordTag {
-	result := make(chan WordTag)
+func (p *Posseg) cutDetail(sentence string) chan Pair {
+	result := make(chan Pair)
 
 	go func() {
 		for blk := range jiebago.RegexpSplit(reHanDetail, sentence) {
@@ -94,11 +94,11 @@ func (p *Posseg) cutDetail(sentence string) chan WordTag {
 					}
 					switch {
 					case reNum.MatchString(x):
-						result <- WordTag{x, "m"}
+						result <- Pair{x, "m"}
 					case reEng.MatchString(x):
-						result <- WordTag{x, "eng"}
+						result <- Pair{x, "eng"}
 					default:
-						result <- WordTag{x, "x"}
+						result <- Pair{x, "x"}
 					}
 				}
 			}
@@ -108,10 +108,10 @@ func (p *Posseg) cutDetail(sentence string) chan WordTag {
 	return result
 }
 
-type cutFunc func(sentence string) chan WordTag
+type cutFunc func(sentence string) chan Pair
 
-func (p *Posseg) cutDAG(sentence string) chan WordTag {
-	result := make(chan WordTag)
+func (p *Posseg) cutDAG(sentence string) chan Pair {
+	result := make(chan Pair)
 
 	go func() {
 		dag := p.DAG(sentence)
@@ -130,9 +130,9 @@ func (p *Posseg) cutDAG(sentence string) chan WordTag {
 					if len(buf) == 1 {
 						sbuf := string(buf)
 						if tag, ok := p.Flag[sbuf]; ok {
-							result <- WordTag{sbuf, tag}
+							result <- Pair{sbuf, tag}
 						} else {
-							result <- WordTag{sbuf, "x"}
+							result <- Pair{sbuf, "x"}
 						}
 						buf = make([]rune, 0)
 					} else {
@@ -145,9 +145,9 @@ func (p *Posseg) cutDAG(sentence string) chan WordTag {
 							for _, elem := range buf {
 								selem := string(elem)
 								if tag, ok := p.Flag[selem]; ok {
-									result <- WordTag{string(elem), tag}
+									result <- Pair{string(elem), tag}
 								} else {
-									result <- WordTag{string(elem), "x"}
+									result <- Pair{string(elem), "x"}
 								}
 
 							}
@@ -157,9 +157,9 @@ func (p *Posseg) cutDAG(sentence string) chan WordTag {
 				}
 				sl_word := string(l_word)
 				if tag, ok := p.Flag[sl_word]; ok {
-					result <- WordTag{sl_word, tag}
+					result <- Pair{sl_word, tag}
 				} else {
-					result <- WordTag{sl_word, "x"}
+					result <- Pair{sl_word, "x"}
 				}
 			}
 			x = y
@@ -169,9 +169,9 @@ func (p *Posseg) cutDAG(sentence string) chan WordTag {
 			if len(buf) == 1 {
 				sbuf := string(buf)
 				if tag, ok := p.Flag[sbuf]; ok {
-					result <- WordTag{sbuf, tag}
+					result <- Pair{sbuf, tag}
 				} else {
-					result <- WordTag{sbuf, "x"}
+					result <- Pair{sbuf, "x"}
 				}
 			} else {
 				bufString := string(buf)
@@ -183,9 +183,9 @@ func (p *Posseg) cutDAG(sentence string) chan WordTag {
 					for _, elem := range buf {
 						selem := string(elem)
 						if tag, ok := p.Flag[selem]; ok {
-							result <- WordTag{selem, tag}
+							result <- Pair{selem, tag}
 						} else {
-							result <- WordTag{selem, "x"}
+							result <- Pair{selem, "x"}
 						}
 					}
 				}
@@ -196,8 +196,8 @@ func (p *Posseg) cutDAG(sentence string) chan WordTag {
 	return result
 }
 
-func (p *Posseg) cutDAGNoHMM(sentence string) chan WordTag {
-	result := make(chan WordTag)
+func (p *Posseg) cutDAGNoHMM(sentence string) chan Pair {
+	result := make(chan Pair)
 
 	go func() {
 		dag := p.DAG(sentence)
@@ -218,20 +218,20 @@ func (p *Posseg) cutDAGNoHMM(sentence string) chan WordTag {
 				x = y
 			} else {
 				if len(buf) > 0 {
-					result <- WordTag{string(buf), "eng"}
+					result <- Pair{string(buf), "eng"}
 					buf = make([]rune, 0)
 				}
 				sl_word := string(l_word)
 				if tag, ok := p.Flag[sl_word]; ok {
-					result <- WordTag{sl_word, tag}
+					result <- Pair{sl_word, tag}
 				} else {
-					result <- WordTag{sl_word, "x"}
+					result <- Pair{sl_word, "x"}
 				}
 				x = y
 			}
 		}
 		if len(buf) > 0 {
-			result <- WordTag{string(buf), "eng"}
+			result <- Pair{string(buf), "eng"}
 			buf = make([]rune, 0)
 		}
 		close(result)
@@ -241,8 +241,8 @@ func (p *Posseg) cutDAGNoHMM(sentence string) chan WordTag {
 
 // Tags the POS of each word after segmentation, using labels compatible with
 // ictclas.
-func (p *Posseg) Cut(sentence string, HMM bool) chan WordTag {
-	result := make(chan WordTag)
+func (p *Posseg) Cut(sentence string, HMM bool) chan Pair {
+	result := make(chan Pair)
 	var cut cutFunc
 	if HMM {
 		cut = p.cutDAG
@@ -258,18 +258,18 @@ func (p *Posseg) Cut(sentence string, HMM bool) chan WordTag {
 			} else {
 				for x := range jiebago.RegexpSplit(reSkipInternal, blk) {
 					if reSkipInternal.MatchString(x) {
-						result <- WordTag{x, "x"}
+						result <- Pair{x, "x"}
 					} else {
 						for _, xx := range x {
 							s := string(xx)
 							switch {
 							case reNum.MatchString(s):
-								result <- WordTag{s, "m"}
+								result <- Pair{s, "m"}
 							case reEng.MatchString(x):
-								result <- WordTag{x, "eng"}
+								result <- Pair{x, "eng"}
 								break
 							default:
-								result <- WordTag{s, "x"}
+								result <- Pair{s, "x"}
 							}
 						}
 					}
diff --git a/posseg/posseg_test.go b/posseg/posseg_test.go
index a1884d8..0c22c50 100644
--- a/posseg/posseg_test.go
+++ b/posseg/posseg_test.go
@@ -92,183 +92,183 @@ var (
 		"你认识那个和主席握手的的哥吗？他开一辆黑色的士。",
 		"枪杆子中出政权"}
 
-	defaultCutResult = [][]WordTag{[]WordTag{WordTag{"这", "r"}, WordTag{"是", "v"}, WordTag{"一个", "m"}, WordTag{"伸手不见五指", "i"}, WordTag{"的", "uj"}, WordTag{"黑夜", "n"}, WordTag{"。", "x"}, WordTag{"我", "r"}, WordTag{"叫", "v"}, WordTag{"孙悟空", "nr"}, WordTag{"，", "x"}, WordTag{"我", "r"}, WordTag{"爱", "v"}, WordTag{"北京", "ns"}, WordTag{"，", "x"}, WordTag{"我", "r"}, WordTag{"爱", "v"}, WordTag{"Python", "eng"}, WordTag{"和", "c"}, WordTag{"C++", "nz"}, WordTag{"。", "x"}},
-		[]WordTag{WordTag{"我", "r"}, WordTag{"不", "d"}, WordTag{"喜欢", "v"}, WordTag{"日本", "ns"}, WordTag{"和服", "nz"}, WordTag{"。", "x"}},
-		[]WordTag{WordTag{"雷猴", "n"}, WordTag{"回归", "v"}, WordTag{"人间", "n"}, WordTag{"。", "x"}},
-		[]WordTag{WordTag{"工信处", "n"}, WordTag{"女干事", "n"}, WordTag{"每月", "r"}, WordTag{"经过", "p"}, WordTag{"下属", "v"}, WordTag{"科室", "n"}, WordTag{"都", "d"}, WordTag{"要", "v"}, WordTag{"亲口", "n"}, WordTag{"交代", "n"}, WordTag{"24", "m"}, WordTag{"口", "n"}, WordTag{"交换机", "n"}, WordTag{"等", "u"}, WordTag{"技术性", "n"}, WordTag{"器件", "n"}, WordTag{"的", "uj"}, WordTag{"安装", "v"}, WordTag{"工作", "vn"}},
-		[]WordTag{WordTag{"我", "r"}, WordTag{"需要", "v"}, WordTag{"廉租房", "n"}},
-		[]WordTag{WordTag{"永和", "nz"}, WordTag{"服装", "vn"}, WordTag{"饰品", "n"}, WordTag{"有限公司", "n"}},
-		[]WordTag{WordTag{"我", "r"}, WordTag{"爱", "v"}, WordTag{"北京", "ns"}, WordTag{"天安门", "ns"}},
-		[]WordTag{WordTag{"abc", "eng"}},
-		[]WordTag{WordTag{"隐", "n"}, WordTag{"马尔可夫", "nr"}},
-		[]WordTag{WordTag{"雷猴", "n"}, WordTag{"是", "v"}, WordTag{"个", "q"}, WordTag{"好", "a"}, WordTag{"网站", "n"}},
-		[]WordTag{WordTag{"“", "x"}, WordTag{"Microsoft", "eng"}, WordTag{"”", "x"}, WordTag{"一", "m"}, WordTag{"词", "n"}, WordTag{"由", "p"}, WordTag{"“", "x"}, WordTag{"MICROcomputer", "eng"}, WordTag{"（", "x"}, WordTag{"微型", "b"}, WordTag{"计算机", "n"}, WordTag{"）", "x"}, WordTag{"”", "x"}, WordTag{"和", "c"}, WordTag{"“", "x"}, WordTag{"SOFTware", "eng"}, WordTag{"（", "x"}, WordTag{"软件", "n"}, WordTag{"）", "x"}, WordTag{"”", "x"}, WordTag{"两", "m"}, WordTag{"部分", "n"}, WordTag{"组成", "v"}},
-		[]WordTag{WordTag{"草泥马", "n"}, WordTag{"和", "c"}, WordTag{"欺实", "v"}, WordTag{"马", "n"}, WordTag{"是", "v"}, WordTag{"今年", "t"}, WordTag{"的", "uj"}, WordTag{"流行", "v"}, WordTag{"词汇", "n"}},
-		[]WordTag{WordTag{"伊藤", "nr"}, WordTag{"洋华堂", "n"}, WordTag{"总府", "n"}, WordTag{"店", "n"}},
-		[]WordTag{WordTag{"中国科学院计算技术研究所", "nt"}},
-		[]WordTag{WordTag{"罗密欧", "nr"}, WordTag{"与", "p"}, WordTag{"朱丽叶", "nr"}},
-		[]WordTag{WordTag{"我", "r"}, WordTag{"购买", "v"}, WordTag{"了", "ul"}, WordTag{"道具", "n"}, WordTag{"和", "c"}, WordTag{"服装", "vn"}},
-		[]WordTag{WordTag{"PS", "eng"}, WordTag{":", "x"}, WordTag{" ", "x"}, WordTag{"我", "r"}, WordTag{"觉得", "v"}, WordTag{"开源", "n"}, WordTag{"有", "v"}, WordTag{"一个", "m"}, WordTag{"好处", "d"}, WordTag{"，", "x"}, WordTag{"就是", "d"}, WordTag{"能够", "v"}, WordTag{"敦促", "v"}, WordTag{"自己", "r"}, WordTag{"不断改进", "l"}, WordTag{"，", "x"}, WordTag{"避免", "v"}, WordTag{"敞", "v"}, WordTag{"帚", "ng"}, WordTag{"自珍", "b"}},
-		[]WordTag{WordTag{"湖北省", "ns"}, WordTag{"石首市", "ns"}},
-		[]WordTag{WordTag{"湖北省", "ns"}, WordTag{"十堰市", "ns"}},
-		[]WordTag{WordTag{"总经理", "n"}, WordTag{"完成", "v"}, WordTag{"了", "ul"}, WordTag{"这件", "mq"}, WordTag{"事情", "n"}},
-		[]WordTag{WordTag{"电脑", "n"}, WordTag{"修好", "v"}, WordTag{"了", "ul"}},
-		[]WordTag{WordTag{"做好", "v"}, WordTag{"了", "ul"}, WordTag{"这件", "mq"}, WordTag{"事情", "n"}, WordTag{"就", "d"}, WordTag{"一了百了", "l"}, WordTag{"了", "ul"}},
-		[]WordTag{WordTag{"人们", "n"}, WordTag{"审美", "vn"}, WordTag{"的", "uj"}, WordTag{"观点", "n"}, WordTag{"是", "v"}, WordTag{"不同", "a"}, WordTag{"的", "uj"}},
-		[]WordTag{WordTag{"我们", "r"}, WordTag{"买", "v"}, WordTag{"了", "ul"}, WordTag{"一个", "m"}, WordTag{"美的", "nr"}, WordTag{"空调", "n"}},
-		[]WordTag{WordTag{"线程", "n"}, WordTag{"初始化", "l"}, WordTag{"时", "n"}, WordTag{"我们", "r"}, WordTag{"要", "v"}, WordTag{"注意", "v"}},
-		[]WordTag{WordTag{"一个", "m"}, WordTag{"分子", "n"}, WordTag{"是", "v"}, WordTag{"由", "p"}, WordTag{"好多", "m"}, WordTag{"原子", "n"}, WordTag{"组织", "v"}, WordTag{"成", "v"}, WordTag{"的", "uj"}},
-		[]WordTag{WordTag{"祝", "v"}, WordTag{"你", "r"}, WordTag{"马到功成", "i"}},
-		[]WordTag{WordTag{"他", "r"}, WordTag{"掉", "v"}, WordTag{"进", "v"}, WordTag{"了", "ul"}, WordTag{"无底洞", "ns"}, WordTag{"里", "f"}},
-		[]WordTag{WordTag{"中国", "ns"}, WordTag{"的", "uj"}, WordTag{"首都", "d"}, WordTag{"是", "v"}, WordTag{"北京", "ns"}},
-		[]WordTag{WordTag{"孙君意", "nr"}},
-		[]WordTag{WordTag{"外交部", "nt"}, WordTag{"发言人", "l"}, WordTag{"马朝旭", "nr"}},
-		[]WordTag{WordTag{"领导人", "n"}, WordTag{"会议", "n"}, WordTag{"和", "c"}, WordTag{"第四届", "m"}, WordTag{"东亚", "ns"}, WordTag{"峰会", "n"}},
-		[]WordTag{WordTag{"在", "p"}, WordTag{"过去", "t"}, WordTag{"的", "uj"}, WordTag{"这", "r"}, WordTag{"五年", "t"}},
-		[]WordTag{WordTag{"还", "d"}, WordTag{"需要", "v"}, WordTag{"很", "d"}, WordTag{"长", "a"}, WordTag{"的", "uj"}, WordTag{"路", "n"}, WordTag{"要", "v"}, WordTag{"走", "v"}},
-		[]WordTag{WordTag{"60", "m"}, WordTag{"周年", "t"}, WordTag{"首都", "d"}, WordTag{"阅兵", "v"}},
-		[]WordTag{WordTag{"你好", "l"}, WordTag{"人们", "n"}, WordTag{"审美", "vn"}, WordTag{"的", "uj"}, WordTag{"观点", "n"}, WordTag{"是", "v"}, WordTag{"不同", "a"}, WordTag{"的", "uj"}},
-		[]WordTag{WordTag{"买", "v"}, WordTag{"水果", "n"}, WordTag{"然后", "c"}, WordTag{"来", "v"}, WordTag{"世博园", "nr"}},
-		[]WordTag{WordTag{"买", "v"}, WordTag{"水果", "n"}, WordTag{"然后", "c"}, WordTag{"去", "v"}, WordTag{"世博园", "nr"}},
-		[]WordTag{WordTag{"但是", "c"}, WordTag{"后来", "t"}, WordTag{"我", "r"}, WordTag{"才", "d"}, WordTag{"知道", "v"}, WordTag{"你", "r"}, WordTag{"是", "v"}, WordTag{"对", "p"}, WordTag{"的", "uj"}},
-		[]WordTag{WordTag{"存在", "v"}, WordTag{"即", "v"}, WordTag{"合理", "vn"}},
-		[]WordTag{WordTag{"的的", "u"}, WordTag{"的的", "u"}, WordTag{"的", "uj"}, WordTag{"在的", "u"}, WordTag{"的的", "u"}, WordTag{"的", "uj"}, WordTag{"就", "d"}, WordTag{"以", "p"}, WordTag{"和和", "nz"}, WordTag{"和", "c"}},
-		[]WordTag{WordTag{"I", "x"}, WordTag{" ", "x"}, WordTag{"love", "eng"}, WordTag{"你", "r"}, WordTag{"，", "x"}, WordTag{"不以为耻", "i"}, WordTag{"，", "x"}, WordTag{"反", "zg"}, WordTag{"以为", "c"}, WordTag{"rong", "eng"}},
-		[]WordTag{WordTag{"因", "p"}},
-		[]WordTag{},
-		[]WordTag{WordTag{"hello", "eng"}, WordTag{"你好", "l"}, WordTag{"人们", "n"}, WordTag{"审美", "vn"}, WordTag{"的", "uj"}, WordTag{"观点", "n"}, WordTag{"是", "v"}, WordTag{"不同", "a"}, WordTag{"的", "uj"}},
-		[]WordTag{WordTag{"很好", "a"}, WordTag{"但", "c"}, WordTag{"主要", "b"}, WordTag{"是", "v"}, WordTag{"基于", "p"}, WordTag{"网页", "n"}, WordTag{"形式", "n"}},
-		[]WordTag{WordTag{"hello", "eng"}, WordTag{"你好", "l"}, WordTag{"人们", "n"}, WordTag{"审美", "vn"}, WordTag{"的", "uj"}, WordTag{"观点", "n"}, WordTag{"是", "v"}, WordTag{"不同", "a"}, WordTag{"的", "uj"}},
-		[]WordTag{WordTag{"为什么", "r"}, WordTag{"我", "r"}, WordTag{"不能", "v"}, WordTag{"拥有", "v"}, WordTag{"想要", "v"}, WordTag{"的", "uj"}, WordTag{"生活", "vn"}},
-		[]WordTag{WordTag{"后来", "t"}, WordTag{"我", "r"}, WordTag{"才", "d"}},
-		[]WordTag{WordTag{"此次", "r"}, WordTag{"来", "v"}, WordTag{"中国", "ns"}, WordTag{"是", "v"}, WordTag{"为了", "p"}},
-		[]WordTag{WordTag{"使用", "v"}, WordTag{"了", "ul"}, WordTag{"它", "r"}, WordTag{"就", "d"}, WordTag{"可以", "c"}, WordTag{"解决", "v"}, WordTag{"一些", "m"}, WordTag{"问题", "n"}},
-		[]WordTag{WordTag{",", "x"}, WordTag{"使用", "v"}, WordTag{"了", "ul"}, WordTag{"它", "r"}, WordTag{"就", "d"}, WordTag{"可以", "c"}, WordTag{"解决", "v"}, WordTag{"一些", "m"}, WordTag{"问题", "n"}},
-		[]WordTag{WordTag{"其实", "d"}, WordTag{"使用", "v"}, WordTag{"了", "ul"}, WordTag{"它", "r"}, WordTag{"就", "d"}, WordTag{"可以", "c"}, WordTag{"解决", "v"}, WordTag{"一些", "m"}, WordTag{"问题", "n"}},
-		[]WordTag{WordTag{"好人", "n"}, WordTag{"使用", "v"}, WordTag{"了", "ul"}, WordTag{"它", "r"}, WordTag{"就", "d"}, WordTag{"可以", "c"}, WordTag{"解决", "v"}, WordTag{"一些", "m"}, WordTag{"问题", "n"}},
-		[]WordTag{WordTag{"是因为", "c"}, WordTag{"和", "c"}, WordTag{"国家", "n"}},
-		[]WordTag{WordTag{"老年", "t"}, WordTag{"搜索", "v"}, WordTag{"还", "d"}, WordTag{"支持", "v"}},
-		[]WordTag{WordTag{"干脆", "d"}, WordTag{"就", "d"}, WordTag{"把", "p"}, WordTag{"那部", "r"}, WordTag{"蒙人", "n"}, WordTag{"的", "uj"}, WordTag{"闲法", "n"}, WordTag{"给", "p"}, WordTag{"废", "v"}, WordTag{"了", "ul"}, WordTag{"拉倒", "v"}, WordTag{"！", "x"}, WordTag{"RT", "eng"}, WordTag{" ", "x"}, WordTag{"@", "x"}, WordTag{"laoshipukong", "eng"}, WordTag{" ", "x"}, WordTag{":", "x"}, WordTag{" ", "x"}, WordTag{"27", "m"}, WordTag{"日", "m"}, WordTag{"，", "x"}, WordTag{"全国人大常委会", "nt"}, WordTag{"第三次", "m"}, WordTag{"审议", "v"}, WordTag{"侵权", "v"}, WordTag{"责任法", "n"}, WordTag{"草案", "n"}, WordTag{"，", "x"}, WordTag{"删除", "v"}, WordTag{"了", "ul"}, WordTag{"有关", "vn"}, WordTag{"医疗", "n"}, WordTag{"损害", "v"}, WordTag{"责任", "n"}, WordTag{"“", "x"}, WordTag{"举证", "v"}, WordTag{"倒置", "v"}, WordTag{"”", "x"}, WordTag{"的", "uj"}, WordTag{"规定", "n"}, WordTag{"。", "x"}, WordTag{"在", "p"}, WordTag{"医患", "n"}, WordTag{"纠纷", "n"}, WordTag{"中本", "ns"}, WordTag{"已", "d"}, WordTag{"处于", "v"}, WordTag{"弱势", "n"}, WordTag{"地位", "n"}, WordTag{"的", "uj"}, WordTag{"消费者", "n"}, WordTag{"由此", "c"}, WordTag{"将", "d"}, WordTag{"陷入", "v"}, WordTag{"万劫不复", "i"}, WordTag{"的", "uj"}, WordTag{"境地", "s"}, WordTag{"。", "x"}, WordTag{" ", "x"}},
-		[]WordTag{WordTag{"大", "a"}},
-		[]WordTag{},
-		[]WordTag{WordTag{"他", "r"}, WordTag{"说", "v"}, WordTag{"的", "uj"}, WordTag{"确实", "ad"}, WordTag{"在", "p"}, WordTag{"理", "n"}},
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-		[]WordTag{WordTag{"枪杆子", "n"}, WordTag{"中", "f"}, WordTag{"出", "v"}, WordTag{"政权", "n"}},
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+		[]Pair{Pair{"永和", "nz"}, Pair{"服装", "vn"}, Pair{"饰品", "n"}, Pair{"有限公司", "n"}},
+		[]Pair{Pair{"我", "r"}, Pair{"爱", "v"}, Pair{"北京", "ns"}, Pair{"天安门", "ns"}},
+		[]Pair{Pair{"abc", "eng"}},
+		[]Pair{Pair{"隐", "n"}, Pair{"马尔可夫", "nr"}},
+		[]Pair{Pair{"雷猴", "n"}, Pair{"是", "v"}, Pair{"个", "q"}, Pair{"好", "a"}, Pair{"网站", "n"}},
+		[]Pair{Pair{"“", "x"}, Pair{"Microsoft", "eng"}, Pair{"”", "x"}, Pair{"一", "m"}, Pair{"词", "n"}, Pair{"由", "p"}, Pair{"“", "x"}, Pair{"MICROcomputer", "eng"}, Pair{"（", "x"}, Pair{"微型", "b"}, Pair{"计算机", "n"}, Pair{"）", "x"}, Pair{"”", "x"}, Pair{"和", "c"}, Pair{"“", "x"}, Pair{"SOFTware", "eng"}, Pair{"（", "x"}, Pair{"软件", "n"}, Pair{"）", "x"}, Pair{"”", "x"}, Pair{"两", "m"}, Pair{"部分", "n"}, Pair{"组成", "v"}},
+		[]Pair{Pair{"草泥马", "n"}, Pair{"和", "c"}, Pair{"欺", "vn"}, Pair{"实", "n"}, Pair{"马", "n"}, Pair{"是", "v"}, Pair{"今年", "t"}, Pair{"的", "uj"}, Pair{"流行", "v"}, Pair{"词汇", "n"}},
+		[]Pair{Pair{"伊", "ns"}, Pair{"藤", "nr"}, Pair{"洋华堂", "n"}, Pair{"总府", "n"}, Pair{"店", "n"}},
+		[]Pair{Pair{"中国科学院计算技术研究所", "nt"}},
+		[]Pair{Pair{"罗密欧", "nr"}, Pair{"与", "p"}, Pair{"朱丽叶", "nr"}},
+		[]Pair{Pair{"我", "r"}, Pair{"购买", "v"}, Pair{"了", "ul"}, Pair{"道具", "n"}, Pair{"和", "c"}, Pair{"服装", "vn"}},
+		[]Pair{Pair{"PS", "eng"}, Pair{":", "x"}, Pair{" ", "x"}, Pair{"我", "r"}, Pair{"觉得", "v"}, Pair{"开源", "n"}, Pair{"有", "v"}, Pair{"一个", "m"}, Pair{"好处", "d"}, Pair{"，", "x"}, Pair{"就是", "d"}, Pair{"能够", "v"}, Pair{"敦促", "v"}, Pair{"自己", "r"}, Pair{"不断改进", "l"}, Pair{"，", "x"}, Pair{"避免", "v"}, Pair{"敞", "v"}, Pair{"帚", "ng"}, Pair{"自珍", "b"}},
+		[]Pair{Pair{"湖北省", "ns"}, Pair{"石首市", "ns"}},
+		[]Pair{Pair{"湖北省", "ns"}, Pair{"十堰市", "ns"}},
+		[]Pair{Pair{"总经理", "n"}, Pair{"完成", "v"}, Pair{"了", "ul"}, Pair{"这件", "mq"}, Pair{"事情", "n"}},
+		[]Pair{Pair{"电脑", "n"}, Pair{"修好", "v"}, Pair{"了", "ul"}},
+		[]Pair{Pair{"做好", "v"}, Pair{"了", "ul"}, Pair{"这件", "mq"}, Pair{"事情", "n"}, Pair{"就", "d"}, Pair{"一了百了", "l"}, Pair{"了", "ul"}},
+		[]Pair{Pair{"人们", "n"}, Pair{"审美", "vn"}, Pair{"的", "uj"}, Pair{"观点", "n"}, Pair{"是", "v"}, Pair{"不同", "a"}, Pair{"的", "uj"}},
+		[]Pair{Pair{"我们", "r"}, Pair{"买", "v"}, Pair{"了", "ul"}, Pair{"一个", "m"}, Pair{"美的", "nr"}, Pair{"空调", "n"}},
+		[]Pair{Pair{"线程", "n"}, Pair{"初始化", "l"}, Pair{"时", "n"}, Pair{"我们", "r"}, Pair{"要", "v"}, Pair{"注意", "v"}},
+		[]Pair{Pair{"一个", "m"}, Pair{"分子", "n"}, Pair{"是", "v"}, Pair{"由", "p"}, Pair{"好多", "m"}, Pair{"原子", "n"}, Pair{"组织", "v"}, Pair{"成", "n"}, Pair{"的", "uj"}},
+		[]Pair{Pair{"祝", "v"}, Pair{"你", "r"}, Pair{"马到功成", "i"}},
+		[]Pair{Pair{"他", "r"}, Pair{"掉", "zg"}, Pair{"进", "v"}, Pair{"了", "ul"}, Pair{"无底洞", "ns"}, Pair{"里", "f"}},
+		[]Pair{Pair{"中国", "ns"}, Pair{"的", "uj"}, Pair{"首都", "d"}, Pair{"是", "v"}, Pair{"北京", "ns"}},
+		[]Pair{Pair{"孙", "zg"}, Pair{"君", "nz"}, Pair{"意", "n"}},
+		[]Pair{Pair{"外交部", "nt"}, Pair{"发言人", "l"}, Pair{"马朝旭", "nr"}},
+		[]Pair{Pair{"领导人", "n"}, Pair{"会议", "n"}, Pair{"和", "c"}, Pair{"第四届", "m"}, Pair{"东亚", "ns"}, Pair{"峰会", "n"}},
+		[]Pair{Pair{"在", "p"}, Pair{"过去", "t"}, Pair{"的", "uj"}, Pair{"这", "r"}, Pair{"五年", "t"}},
+		[]Pair{Pair{"还", "d"}, Pair{"需要", "v"}, Pair{"很", "zg"}, Pair{"长", "a"}, Pair{"的", "uj"}, Pair{"路", "n"}, Pair{"要", "v"}, Pair{"走", "v"}},
+		[]Pair{Pair{"60", "eng"}, Pair{"周年", "t"}, Pair{"首都", "d"}, Pair{"阅兵", "v"}},
+		[]Pair{Pair{"你好", "l"}, Pair{"人们", "n"}, Pair{"审美", "vn"}, Pair{"的", "uj"}, Pair{"观点", "n"}, Pair{"是", "v"}, Pair{"不同", "a"}, Pair{"的", "uj"}},
+		[]Pair{Pair{"买", "v"}, Pair{"水果", "n"}, Pair{"然后", "c"}, Pair{"来", "v"}, Pair{"世博园", "nr"}},
+		[]Pair{Pair{"买", "v"}, Pair{"水果", "n"}, Pair{"然后", "c"}, Pair{"去", "v"}, Pair{"世博园", "nr"}},
+		[]Pair{Pair{"但是", "c"}, Pair{"后来", "t"}, Pair{"我", "r"}, Pair{"才", "d"}, Pair{"知道", "v"}, Pair{"你", "r"}, Pair{"是", "v"}, Pair{"对", "p"}, Pair{"的", "uj"}},
+		[]Pair{Pair{"存在", "v"}, Pair{"即", "v"}, Pair{"合理", "vn"}},
+		[]Pair{Pair{"的", "uj"}, Pair{"的", "uj"}, Pair{"的", "uj"}, Pair{"的", "uj"}, Pair{"的", "uj"}, Pair{"在", "p"}, Pair{"的", "uj"}, Pair{"的", "uj"}, Pair{"的", "uj"}, Pair{"的", "uj"}, Pair{"就", "d"}, Pair{"以", "p"}, Pair{"和", "c"}, Pair{"和", "c"}, Pair{"和", "c"}},
+		[]Pair{Pair{"I", "eng"}, Pair{" ", "x"}, Pair{"love", "eng"}, Pair{"你", "r"}, Pair{"，", "x"}, Pair{"不以为耻", "i"}, Pair{"，", "x"}, Pair{"反", "zg"}, Pair{"以为", "c"}, Pair{"rong", "eng"}},
+		[]Pair{Pair{"因", "p"}},
+		[]Pair{},
+		[]Pair{Pair{"hello", "eng"}, Pair{"你好", "l"}, Pair{"人们", "n"}, Pair{"审美", "vn"}, Pair{"的", "uj"}, Pair{"观点", "n"}, Pair{"是", "v"}, Pair{"不同", "a"}, Pair{"的", "uj"}},
+		[]Pair{Pair{"很", "zg"}, Pair{"好", "a"}, Pair{"但", "c"}, Pair{"主要", "b"}, Pair{"是", "v"}, Pair{"基于", "p"}, Pair{"网页", "n"}, Pair{"形式", "n"}},
+		[]Pair{Pair{"hello", "eng"}, Pair{"你好", "l"}, Pair{"人们", "n"}, Pair{"审美", "vn"}, Pair{"的", "uj"}, Pair{"观点", "n"}, Pair{"是", "v"}, Pair{"不同", "a"}, Pair{"的", "uj"}},
+		[]Pair{Pair{"为什么", "r"}, Pair{"我", "r"}, Pair{"不能", "v"}, Pair{"拥有", "v"}, Pair{"想要", "v"}, Pair{"的", "uj"}, Pair{"生活", "vn"}},
+		[]Pair{Pair{"后来", "t"}, Pair{"我", "r"}, Pair{"才", "d"}},
+		[]Pair{Pair{"此次", "r"}, Pair{"来", "v"}, Pair{"中国", "ns"}, Pair{"是", "v"}, Pair{"为了", "p"}},
+		[]Pair{Pair{"使用", "v"}, Pair{"了", "ul"}, Pair{"它", "r"}, Pair{"就", "d"}, Pair{"可以", "c"}, Pair{"解决", "v"}, Pair{"一些", "m"}, Pair{"问题", "n"}},
+		[]Pair{Pair{",", "x"}, Pair{"使用", "v"}, Pair{"了", "ul"}, Pair{"它", "r"}, Pair{"就", "d"}, Pair{"可以", "c"}, Pair{"解决", "v"}, Pair{"一些", "m"}, Pair{"问题", "n"}},
+		[]Pair{Pair{"其实", "d"}, Pair{"使用", "v"}, Pair{"了", "ul"}, Pair{"它", "r"}, Pair{"就", "d"}, Pair{"可以", "c"}, Pair{"解决", "v"}, Pair{"一些", "m"}, Pair{"问题", "n"}},
+		[]Pair{Pair{"好人", "n"}, Pair{"使用", "v"}, Pair{"了", "ul"}, Pair{"它", "r"}, Pair{"就", "d"}, Pair{"可以", "c"}, Pair{"解决", "v"}, Pair{"一些", "m"}, Pair{"问题", "n"}},
+		[]Pair{Pair{"是因为", "c"}, Pair{"和", "c"}, Pair{"国家", "n"}},
+		[]Pair{Pair{"老年", "t"}, Pair{"搜索", "v"}, Pair{"还", "d"}, Pair{"支持", "v"}},
+		[]Pair{Pair{"干脆", "d"}, Pair{"就", "d"}, Pair{"把", "p"}, Pair{"那", "r"}, Pair{"部", "n"}, Pair{"蒙", "v"}, Pair{"人", "n"}, Pair{"的", "uj"}, Pair{"闲", "n"}, Pair{"法", "j"}, Pair{"给", "p"}, Pair{"废", "v"}, Pair{"了", "ul"}, Pair{"拉倒", "v"}, Pair{"！", "x"}, Pair{"RT", "eng"}, Pair{" ", "x"}, Pair{"@", "x"}, Pair{"laoshipukong", "eng"}, Pair{" ", "x"}, Pair{":", "x"}, Pair{" ", "x"}, Pair{"27", "eng"}, Pair{"日", "m"}, Pair{"，", "x"}, Pair{"全国人大常委会", "nt"}, Pair{"第三次", "m"}, Pair{"审议", "v"}, Pair{"侵权", "v"}, Pair{"责任法", "n"}, Pair{"草案", "n"}, Pair{"，", "x"}, Pair{"删除", "v"}, Pair{"了", "ul"}, Pair{"有关", "vn"}, Pair{"医疗", "n"}, Pair{"损害", "v"}, Pair{"责任", "n"}, Pair{"“", "x"}, Pair{"举证", "v"}, Pair{"倒置", "v"}, Pair{"”", "x"}, Pair{"的", "uj"}, Pair{"规定", "n"}, Pair{"。", "x"}, Pair{"在", "p"}, Pair{"医患", "n"}, Pair{"纠纷", "n"}, Pair{"中", "f"}, Pair{"本", "r"}, Pair{"已", "d"}, Pair{"处于", "v"}, Pair{"弱势", "n"}, Pair{"地位", "n"}, Pair{"的", "uj"}, Pair{"消费者", "n"}, Pair{"由此", "c"}, Pair{"将", "d"}, Pair{"陷入", "v"}, Pair{"万劫不复", "i"}, Pair{"的", "uj"}, Pair{"境地", "s"}, Pair{"。", "x"}, Pair{" ", "x"}},
+		[]Pair{Pair{"大", "a"}},
+		[]Pair{},
+		[]Pair{Pair{"他", "r"}, Pair{"说", "v"}, Pair{"的", "uj"}, Pair{"确实", "ad"}, Pair{"在", "p"}, Pair{"理", "n"}},
+		[]Pair{Pair{"长春", "ns"}, Pair{"市长", "n"}, Pair{"春节", "t"}, Pair{"讲话", "n"}},
+		[]Pair{Pair{"结婚", "v"}, Pair{"的", "uj"}, Pair{"和", "c"}, Pair{"尚未", "d"}, Pair{"结婚", "v"}, Pair{"的", "uj"}},
+		[]Pair{Pair{"结合", "v"}, Pair{"成", "n"}, Pair{"分子", "n"}, Pair{"时", "n"}},
+		[]Pair{Pair{"旅游", "vn"}, Pair{"和", "c"}, Pair{"服务", "vn"}, Pair{"是", "v"}, Pair{"最好", "a"}, Pair{"的", "uj"}},
+		[]Pair{Pair{"这件", "mq"}, Pair{"事情", "n"}, Pair{"的确", "d"}, Pair{"是", "v"}, Pair{"我", "r"}, Pair{"的", "uj"}, Pair{"错", "v"}},
+		[]Pair{Pair{"供", "v"}, Pair{"大家", "n"}, Pair{"参考", "v"}, Pair{"指正", "v"}},
+		[]Pair{Pair{"哈尔滨", "ns"}, Pair{"政府", "n"}, Pair{"公布", "v"}, Pair{"塌", "v"}, Pair{"桥", "n"}, Pair{"原因", "n"}},
+		[]Pair{Pair{"我", "r"}, Pair{"在", "p"}, Pair{"机场", "n"}, Pair{"入口处", "i"}},
+		[]Pair{Pair{"邢", "nr"}, Pair{"永", "ns"}, Pair{"臣", "n"}, Pair{"摄影", "n"}, Pair{"报道", "v"}},
+		[]Pair{Pair{"BP", "eng"}, Pair{"神经网络", "n"}, Pair{"如何", "r"}, Pair{"训练", "vn"}, Pair{"才能", "v"}, Pair{"在", "p"}, Pair{"分类", "n"}, Pair{"时", "n"}, Pair{"增加", "v"}, Pair{"区分度", "n"}, Pair{"？", "x"}},
+		[]Pair{Pair{"南京市", "ns"}, Pair{"长江大桥", "ns"}},
+		[]Pair{Pair{"应", "v"}, Pair{"一些", "m"}, Pair{"使用者", "n"}, Pair{"的", "uj"}, Pair{"建议", "n"}, Pair{"，", "x"}, Pair{"也", "d"}, Pair{"为了", "p"}, Pair{"便于", "v"}, Pair{"利用", "n"}, Pair{"NiuTrans", "eng"}, Pair{"用于", "v"}, Pair{"SMT", "eng"}, Pair{"研究", "vn"}},
+		[]Pair{Pair{"长春市", "ns"}, Pair{"长春", "ns"}, Pair{"药店", "n"}},
+		[]Pair{Pair{"邓颖超", "nr"}, Pair{"生前", "t"}, Pair{"最", "d"}, Pair{"喜欢", "v"}, Pair{"的", "uj"}, Pair{"衣服", "n"}},
+		[]Pair{Pair{"胡锦涛", "nr"}, Pair{"是", "v"}, Pair{"热爱", "a"}, Pair{"世界", "n"}, Pair{"和平", "nz"}, Pair{"的", "uj"}, Pair{"政治局", "n"}, Pair{"常委", "j"}},
+		[]Pair{Pair{"程序员", "n"}, Pair{"祝", "v"}, Pair{"海林", "nz"}, Pair{"和", "c"}, Pair{"朱", "nr"}, Pair{"会", "v"}, Pair{"震", "v"}, Pair{"是", "v"}, Pair{"在", "p"}, Pair{"孙", "zg"}, Pair{"健", "a"}, Pair{"的", "uj"}, Pair{"左面", "f"}, Pair{"和", "c"}, Pair{"右面", "f"}, Pair{",", "x"}, Pair{" ", "x"}, Pair{"范", "nr"}, Pair{"凯", "nr"}, Pair{"在", "p"}, Pair{"最", "d"}, Pair{"右面", "f"}, Pair{".", "x"}, Pair{"再", "d"}, Pair{"往", "zg"}, Pair{"左", "m"}, Pair{"是", "v"}, Pair{"李", "nr"}, Pair{"松", "v"}, Pair{"洪", "nr"}},
+		[]Pair{Pair{"一次性", "d"}, Pair{"交", "v"}, Pair{"多少", "m"}, Pair{"钱", "n"}},
+		[]Pair{Pair{"两块", "m"}, Pair{"五", "m"}, Pair{"一套", "m"}, Pair{"，", "x"}, Pair{"三块", "m"}, Pair{"八", "m"}, Pair{"一斤", "m"}, Pair{"，", "x"}, Pair{"四块", "m"}, Pair{"七", "m"}, Pair{"一本", "m"}, Pair{"，", "x"}, Pair{"五块", "m"}, Pair{"六", "m"}, Pair{"一条", "m"}},
+		[]Pair{Pair{"小", "a"}, Pair{"和尚", "nr"}, Pair{"留", "v"}, Pair{"了", "ul"}, Pair{"一个", "m"}, Pair{"像", "v"}, Pair{"大", "a"}, Pair{"和尚", "nr"}, Pair{"一样", "r"}, Pair{"的", "uj"}, Pair{"和尚头", "nr"}},
+		[]Pair{Pair{"我", "r"}, Pair{"是", "v"}, Pair{"中华人民共和国", "ns"}, Pair{"公民", "n"}, Pair{";", "x"}, Pair{"我", "r"}, Pair{"爸爸", "n"}, Pair{"是", "v"}, Pair{"共和党", "nt"}, Pair{"党员", "n"}, Pair{";", "x"}, Pair{" ", "x"}, Pair{"地铁", "n"}, Pair{"和平门", "ns"}, Pair{"站", "v"}},
+		[]Pair{Pair{"张晓梅", "nr"}, Pair{"去", "v"}, Pair{"人民", "n"}, Pair{"医院", "n"}, Pair{"做", "v"}, Pair{"了", "ul"}, Pair{"个", "q"}, Pair{"B超", "n"}, Pair{"然后", "c"}, Pair{"去", "v"}, Pair{"买", "v"}, Pair{"了", "ul"}, Pair{"件", "zg"}, Pair{"T恤", "n"}},
+		[]Pair{Pair{"AT&T", "nz"}, Pair{"是", "v"}, Pair{"一件", "m"}, Pair{"不错", "a"}, Pair{"的", "uj"}, Pair{"公司", "n"}, Pair{"，", "x"}, Pair{"给", "p"}, Pair{"你", "r"}, Pair{"发", "v"}, Pair{"offer", "eng"}, Pair{"了", "ul"}, Pair{"吗", "y"}, Pair{"？", "x"}},
+		[]Pair{Pair{"C++", "nz"}, Pair{"和", "c"}, Pair{"c#", "nz"}, Pair{"是", "v"}, Pair{"什么", "r"}, Pair{"关系", "n"}, Pair{"？", "x"}, Pair{"11", "eng"}, Pair{"+", "x"}, Pair{"122", "eng"}, Pair{"=", "x"}, Pair{"133", "eng"}, Pair{"，", "x"}, Pair{"是", "v"}, Pair{"吗", "y"}, Pair{"？", "x"}, Pair{"PI", "eng"}, Pair{"=", "x"}, Pair{"3", "eng"}, Pair{".", "x"}, Pair{"14159", "eng"}},
+		[]Pair{Pair{"你", "r"}, Pair{"认识", "v"}, Pair{"那个", "r"}, Pair{"和", "c"}, Pair{"主席", "n"}, Pair{"握手", "v"}, Pair{"的", "uj"}, Pair{"的哥", "n"}, Pair{"吗", "y"}, Pair{"？", "x"}, Pair{"他", "r"}, Pair{"开", "v"}, Pair{"一辆", "m"}, Pair{"黑色", "n"}, Pair{"的士", "n"}, Pair{"。", "x"}},
+		[]Pair{Pair{"枪杆子", "n"}, Pair{"中", "f"}, Pair{"出", "v"}, Pair{"政权", "n"}},
 	}
 )
 
-func chanToArray(ch chan WordTag) []WordTag {
-	result := make([]WordTag, 0)
+func chanToArray(ch chan Pair) []Pair {
+	result := make([]Pair, 0)
 	for word := range ch {
 		result = append(result, word)
 	}
@@ -309,11 +309,11 @@ func TestBug132(t *testing.T) {
 	*/
 	p, _ := NewPosseg("../dict.txt")
 	sentence := "又跛又啞"
-	cutResult := []WordTag{
-		WordTag{"又", "d"},
-		WordTag{"跛", "a"},
-		WordTag{"又", "d"},
-		WordTag{"啞", "v"},
+	cutResult := []Pair{
+		Pair{"又", "d"},
+		Pair{"跛", "a"},
+		Pair{"又", "d"},
+		Pair{"啞", "v"},
 	}
 	result := chanToArray(p.Cut(sentence, true))
 	if len(cutResult) != len(result) {
@@ -332,20 +332,20 @@ func TestBug137(t *testing.T) {
 	*/
 	p, _ := NewPosseg("../dict.txt")
 	sentence := "前港督衛奕信在八八年十月宣布成立中央政策研究組"
-	cutResult := []WordTag{
-		WordTag{"前", "f"},
-		WordTag{"港督", "n"},
-		WordTag{"衛奕", "z"},
-		WordTag{"信", "n"},
-		WordTag{"在", "p"},
-		WordTag{"八八年", "m"},
-		WordTag{"十月", "t"},
-		WordTag{"宣布", "v"},
-		WordTag{"成立", "v"},
-		WordTag{"中央", "n"},
-		WordTag{"政策", "n"},
-		WordTag{"研究", "vn"},
-		WordTag{"組", "x"},
+	cutResult := []Pair{
+		Pair{"前", "f"},
+		Pair{"港督", "n"},
+		Pair{"衛奕", "z"},
+		Pair{"信", "n"},
+		Pair{"在", "p"},
+		Pair{"八八年", "m"},
+		Pair{"十月", "t"},
+		Pair{"宣布", "v"},
+		Pair{"成立", "v"},
+		Pair{"中央", "n"},
+		Pair{"政策", "n"},
+		Pair{"研究", "vn"},
+		Pair{"組", "x"},
 	}
 	result := chanToArray(p.Cut(sentence, true))
 	if len(cutResult) != len(result) {
@@ -363,44 +363,44 @@ func TestUserDict(t *testing.T) {
 	p.LoadUserDict("../userdict.txt")
 	sentence := "李小福是创新办主任也是云计算方面的专家; 什么是八一双鹿例如我输入一个带“韩玉赏鉴”的标题，在自定义词库中也增加了此词为N类型"
 
-	cutResult := []WordTag{
-		WordTag{"李小福", "nr"},
-		WordTag{"是", "v"},
-		WordTag{"创新办", "i"},
-		WordTag{"主任", "b"},
-		WordTag{"也", "d"},
-		WordTag{"是", "v"},
-		WordTag{"云计算", "x"},
-		WordTag{"方面", "n"},
-		WordTag{"的", "uj"},
-		WordTag{"专家", "n"},
-		WordTag{";", "x"},
-		WordTag{" ", "x"},
-		WordTag{"什么", "r"},
-		WordTag{"是", "v"},
-		WordTag{"八一双鹿", "nz"},
-		WordTag{"例如", "v"},
-		WordTag{"我", "r"},
-		WordTag{"输入", "v"},
-		WordTag{"一个", "m"},
-		WordTag{"带", "v"},
-		WordTag{"“", "x"},
-		WordTag{"韩玉赏鉴", "nz"},
-		WordTag{"”", "x"},
-		WordTag{"的", "uj"},
-		WordTag{"标题", "n"},
-		WordTag{"，", "x"},
-		WordTag{"在", "p"},
-		WordTag{"自定义词", "n"},
-		WordTag{"库中", "nrt"},
-		WordTag{"也", "d"},
-		WordTag{"增加", "v"},
-		WordTag{"了", "ul"},
-		WordTag{"此", "r"},
-		WordTag{"词", "n"},
-		WordTag{"为", "p"},
-		WordTag{"N", "eng"},
-		WordTag{"类型", "n"}}
+	cutResult := []Pair{
+		Pair{"李小福", "nr"},
+		Pair{"是", "v"},
+		Pair{"创新办", "i"},
+		Pair{"主任", "b"},
+		Pair{"也", "d"},
+		Pair{"是", "v"},
+		Pair{"云计算", "x"},
+		Pair{"方面", "n"},
+		Pair{"的", "uj"},
+		Pair{"专家", "n"},
+		Pair{";", "x"},
+		Pair{" ", "x"},
+		Pair{"什么", "r"},
+		Pair{"是", "v"},
+		Pair{"八一双鹿", "nz"},
+		Pair{"例如", "v"},
+		Pair{"我", "r"},
+		Pair{"输入", "v"},
+		Pair{"一个", "m"},
+		Pair{"带", "v"},
+		Pair{"“", "x"},
+		Pair{"韩玉赏鉴", "nz"},
+		Pair{"”", "x"},
+		Pair{"的", "uj"},
+		Pair{"标题", "n"},
+		Pair{"，", "x"},
+		Pair{"在", "p"},
+		Pair{"自定义词", "n"},
+		Pair{"库中", "nrt"},
+		Pair{"也", "d"},
+		Pair{"增加", "v"},
+		Pair{"了", "ul"},
+		Pair{"此", "r"},
+		Pair{"词", "n"},
+		Pair{"为", "p"},
+		Pair{"N", "eng"},
+		Pair{"类型", "n"}}
 
 	result := chanToArray(p.Cut(sentence, true))
 	if len(cutResult) != len(result) {
diff --git a/util.go b/util.go
index 85d1acb..c2b9716 100644
--- a/util.go
+++ b/util.go
@@ -40,13 +40,12 @@ func LoadDict(l DictLoader, dictFileName string, usingFlag bool) error {
 	}
 	defer dictFile.Close()
 	scanner := bufio.NewScanner(dictFile)
-	var entry *Entry
+	var entry Entry
 	var line string
 	var fields []string
 	for scanner.Scan() {
 		line = scanner.Text()
 		fields = strings.Split(line, " ")
-		entry = NewEntry()
 		entry.Word = strings.Replace(fields[0], "\ufeff", "", 1)
 		if length := len(fields); length > 1 {
 			entry.Freq, err = strconv.ParseFloat(fields[1], 64)