diff --git a/Convention/[Symbolization]/Detail/Keyword.cs b/Convention/[Symbolization]/Detail/Keyword.cs
index 274ed7b..0b20edd 100644
--- a/Convention/[Symbolization]/Detail/Keyword.cs
+++ b/Convention/[Symbolization]/Detail/Keyword.cs
@@ -1,6 +1,7 @@
 using System;
-using System.IO;
 using System.Collections.Generic;
+using System.IO;
+using static System.Net.Mime.MediaTypeNames;
 
 namespace Convention.Symbolization.Internal
 {
@@ -10,17 +11,17 @@ namespace Convention.Symbolization.Internal
 
         public static readonly Dictionary<string, Keyword> Keywords = new()
         {
-            {  "import", new Convention.Symbolization.Keyword.Import() },
-            { "namespace", new Convention.Symbolization.Keyword.Namespace() },
-            { "def", new Convention.Symbolization.Keyword.FunctionDef() },
-            { "return", new Convention.Symbolization.Keyword.Return() },
-            { "if", new Convention.Symbolization.Keyword.If() },
-            { "elif", new Convention.Symbolization.Keyword.Elif() },
-            { "else", new Convention.Symbolization.Keyword.Else() },
-            { "while", new Convention.Symbolization.Keyword.While() },
-            { "break", new Convention.Symbolization.Keyword.Break() },
-            { "continue", new Convention.Symbolization.Keyword.Continue() },
-            { "struct", new Convention.Symbolization.Keyword.Structure() }
+            {  "import", new Convention.Symbolization.Keyword.Import(0,0) },
+            { "namespace", new Convention.Symbolization.Keyword.Namespace(0,0) },
+            { "def", new Convention.Symbolization.Keyword.FunctionDef(0,0) },
+            { "return", new Convention.Symbolization.Keyword.Return(0,0) },
+            { "if", new Convention.Symbolization.Keyword.If(0,0) },
+            { "elif", new Convention.Symbolization.Keyword.Elif(0,0) },
+            { "else", new Convention.Symbolization.Keyword.Else(0,0) },
+            { "while", new Convention.Symbolization.Keyword.While(0,0) },
+            { "break", new Convention.Symbolization.Keyword.Break(0,0) },
+            { "continue", new Convention.Symbolization.Keyword.Continue(0,0) },
+            { "struct", new Convention.Symbolization.Keyword.Structure(0,0) }
         };
 
         public override bool Equals(Keyword other)
@@ -28,19 +29,14 @@ namespace Convention.Symbolization.Internal
             return this.GetType() == other.GetType();
         }
 
-        public virtual bool ControlScope(SymbolizationContext context, int line, int wordIndex, Variable next)
-        {
-            return ControlScope(context, next);
-        }
-        protected virtual bool ControlScope(SymbolizationContext context, Variable next)
-        {
-            return true;
-        }
+        public abstract bool ControlScope(Variable next);
+
+        public abstract void BuildScope(SymbolizationContext context, List<Variable> scopeWords);
     }
 
     public abstract class Keyword<T> : Keyword where T : Keyword<T>
     {
-        protected Keyword(string keyword,int lineIndex,int wordIndex) : base(keyword, lineIndex, wordIndex) { }
+        protected Keyword(string keyword, int lineIndex, int wordIndex) : base(keyword, lineIndex, wordIndex) { }
 
         public override bool Equals(Variable other)
         {
@@ -53,33 +49,47 @@ namespace Convention.Symbolization.Keyword
 {
     public abstract class SingleKeyword<T> : Internal.Keyword<T> where T : SingleKeyword<T>
     {
-        protected SingleKeyword(string keyword,int lineIndex,int wordIndex) : base(keyword, lineIndex, wordIndex)
+        protected SingleKeyword(string keyword, int lineIndex, int wordIndex) : base(keyword, lineIndex, wordIndex)
         {
         }
-        protected override bool ControlScope(SymbolizationContext context, Internal.Variable next)
+        public override bool ControlScope(Internal.Variable next)
         {
-            if (next is not Internal.ScriptWordVariable swv ||swv.Word!=";")
-                throw new InvalidGrammarException($"Expected ';' but got {next}");
-            return true;
+            if (next is Internal.ScriptWordVariable swv && swv.Word == ";")
+                return true;
+            throw new InvalidGrammarException($"Expected ';' but got {next}");
+        }
+
+        public abstract void BuildScope();
+
+        public sealed override void BuildScope(SymbolizationContext context, List<Internal.Variable> scopeWords)
+        {
+            BuildScope();
         }
     }
 
     public abstract class SentenceKeyword<T> : Internal.Keyword<T> where T : SentenceKeyword<T>
     {
-        protected SentenceKeyword(string keyword,int lineIndex,int wordIndex) : base(keyword, lineIndex, wordIndex)
+        protected SentenceKeyword(string keyword, int lineIndex, int wordIndex) : base(keyword, lineIndex, wordIndex)
         {
         }
-        protected override bool ControlScope(SymbolizationContext context, Internal.Variable next)
+        public override bool ControlScope(Internal.Variable next)
         {
             if (next is not Internal.ScriptWordVariable swv)
                 throw new InvalidGrammarException($"Not expected a key Word: {next}");
             return swv.Word != ";";
         }
+
+        public abstract void BuildSentence(SymbolizationContext context, List<Internal.Variable> sentence);
+
+        public sealed override void BuildScope(SymbolizationContext context, List<Internal.Variable> scopeWords)
+        {
+            BuildSentence(context, scopeWords.GetRange(0, scopeWords.Count - 1));
+        }
     }
 
     public abstract class NamespaceKeyword<T> : Internal.Keyword<T> where T : NamespaceKeyword<T>
     {
-        protected NamespaceKeyword(string keyword,int lineIndex,int wordIndex) : base(keyword, lineIndex, wordIndex)
+        protected NamespaceKeyword(string keyword, int lineIndex, int wordIndex) : base(keyword, lineIndex, wordIndex)
         {
         }
         private enum Pause
@@ -90,7 +100,7 @@ namespace Convention.Symbolization.Keyword
         private Pause pause = Pause.Name;
         private int layer = 0;
 
-        protected override bool ControlScope(SymbolizationContext context, Internal.Variable next)
+        public override bool ControlScope(Internal.Variable next)
         {
             if (pause == Pause.Name)
             {
@@ -124,11 +134,58 @@ namespace Convention.Symbolization.Keyword
                 return true;
             }
         }
+
+        public abstract void BuildSpace(
+            SymbolizationContext context,
+            List<Internal.ScriptWordVariable> spaceExpression,
+            Dictionary<Internal.Variable, Internal.Variable> scopeStartAndEnd,
+            List<Internal.Variable> insideScopeWords
+            );
+
+        public override void BuildScope(SymbolizationContext context, List<Internal.Variable> scopeWords)
+        {
+            List<Internal.ScriptWordVariable> spaceExpression = new();
+            Dictionary<Internal.Variable, Internal.Variable> scopeStartAndEnd = new();
+            Stack<Internal.Variable> stack = new();
+            bool IsSpaceExpression = true;
+            foreach (var word in scopeWords)
+            {
+                var swv = word as Internal.ScriptWordVariable;
+                if (IsSpaceExpression)
+                {
+                    if (swv.Word == "{")
+                    {
+                        IsSpaceExpression = false;
+                        stack.Push(swv);
+                        layer++;
+                    }
+                    else
+                    {
+                        spaceExpression.Add(swv);
+                    }
+                }
+                else
+                {
+                    if (swv.Word == "{")
+                    {
+                        stack.Push(swv);
+                        layer++;
+                    }
+                    else if (swv.Word == "}")
+                    {
+                        scopeStartAndEnd.Add(stack.Pop(), swv);
+                        layer--;
+                    }
+                }
+            }
+            BuildSpace(context, spaceExpression, scopeStartAndEnd, 
+                scopeWords.GetRange(spaceExpression.Count, scopeWords.Count - spaceExpression.Count));
+        }
     }
 
     public abstract class VerbObjectScopeKeyword<T> : Internal.Keyword<T> where T : VerbObjectScopeKeyword<T>
     {
-        protected VerbObjectScopeKeyword(string keyword,int lineIndex,int wordIndex) : base(keyword, lineIndex, wordIndex)
+        protected VerbObjectScopeKeyword(string keyword, int lineIndex, int wordIndex) : base(keyword, lineIndex, wordIndex)
         {
         }
 
@@ -140,7 +197,7 @@ namespace Convention.Symbolization.Keyword
         private Pause pause = Pause.BeforeExpression;
         private int layer = 0;
 
-        protected override bool ControlScope(SymbolizationContext context, Internal.Variable next)
+        public override bool ControlScope(Internal.Variable next)
         {
             if (pause == Pause.BeforeExpression)
             {
@@ -191,6 +248,62 @@ namespace Convention.Symbolization.Keyword
             }
             return true;
         }
+
+        public override void BuildScope(SymbolizationContext context, List<Internal.Variable> scopeWords)
+        {
+            pause = Pause.BeforeExpression; 
+            layer = 0;
+            foreach (var word in scopeWords)
+            {
+                if (pause == Pause.BeforeExpression)
+                {
+                    if (next is not Internal.ScriptWordVariable swv)
+                        throw new InvalidGrammarException($"Not expected a key Word: {next}");
+                    if (swv.Word == "(")
+                        pause = Pause.Expression;
+                    else
+                        throw new InvalidGrammarException($"Expected '(' symbol for expression start, but got {next}");
+                }
+                else if (pause == Pause.Expression)
+                {
+                    if (next is Internal.ScriptWordVariable swv && swv.Word == ")")
+                    {
+                        pause = Pause.BeforeBody;
+                    }
+                }
+                else if (pause == Pause.BeforeBody)
+                {
+                    if (next is not Internal.ScriptWordVariable swv)
+                        throw new InvalidGrammarException($"Not expected keyword for body start, but got {next}");
+                    if (swv.Word == "{")
+                    {
+                        pause = Pause.Body;
+                        layer++;
+                    }
+                    else
+                        pause = Pause.SingleSentence;
+                }
+                else if (pause == Pause.Body)
+                {
+                    if (next is Internal.ScriptWordVariable swv)
+                    {
+                        if (swv.Word == "{")
+                            layer++;
+                        else if (swv.Word == "}")
+                            layer--;
+                        if (layer == 0)
+                            return false;
+                    }
+                }
+                else if (pause == Pause.SingleSentence)
+                {
+                    if (next is Internal.ScriptWordVariable swv && swv.Word == ";")
+                    {
+                        return false;
+                    }
+                }
+            }
+        }
     }
 
     /// <summary>
@@ -198,7 +311,7 @@ namespace Convention.Symbolization.Keyword
     /// </summary>
     public sealed class Import : SentenceKeyword<Import>
     {
-        public Import(int lineIndex,int wordIndex) : base("import",lineIndex,wordIndex)
+        public Import(int lineIndex, int wordIndex) : base("import", lineIndex, wordIndex)
         {
         }
 
@@ -213,7 +326,7 @@ namespace Convention.Symbolization.Keyword
     /// </summary>
     public sealed class Namespace : NamespaceKeyword<Namespace>
     {
-        public Namespace(int lineIndex,int wordIndex) : base("namespace", lineIndex, wordIndex)
+        public Namespace(int lineIndex, int wordIndex) : base("namespace", lineIndex, wordIndex)
         {
         }
         public override Internal.Keyword CloneVariable(string targetSymbolName, int lineIndex, int wordIndex)
@@ -227,7 +340,7 @@ namespace Convention.Symbolization.Keyword
     /// </summary>
     public sealed class FunctionDef : NamespaceKeyword<FunctionDef>
     {
-        public FunctionDef(int lineIndex,int wordIndex) : base("def", lineIndex, wordIndex)
+        public FunctionDef(int lineIndex, int wordIndex) : base("def", lineIndex, wordIndex)
         {
         }
         public override Internal.Keyword CloneVariable(string targetSymbolName, int lineIndex, int wordIndex)
@@ -241,7 +354,7 @@ namespace Convention.Symbolization.Keyword
     /// </summary>
     public sealed class Return : SentenceKeyword<Return>
     {
-        public Return(int lineIndex,int wordIndex) : base("return", lineIndex, wordIndex)
+        public Return(int lineIndex, int wordIndex) : base("return", lineIndex, wordIndex)
         {
         }
         public override Internal.Keyword CloneVariable(string targetSymbolName, int lineIndex, int wordIndex)
@@ -255,7 +368,7 @@ namespace Convention.Symbolization.Keyword
     /// </summary>
     public sealed class If : VerbObjectScopeKeyword<If>
     {
-        public If(int lineIndex,int wordIndex) : base("if", lineIndex, wordIndex)
+        public If(int lineIndex, int wordIndex) : base("if", lineIndex, wordIndex)
         {
         }
         public override Internal.Keyword CloneVariable(string targetSymbolName, int lineIndex, int wordIndex)
@@ -270,7 +383,7 @@ namespace Convention.Symbolization.Keyword
     /// </summary>
     public sealed class Elif : VerbObjectScopeKeyword<Elif>
     {
-        public Elif(int lineIndex,int wordIndex) : base("elif", lineIndex, wordIndex)
+        public Elif(int lineIndex, int wordIndex) : base("elif", lineIndex, wordIndex)
         {
         }
         public override Internal.Keyword CloneVariable(string targetSymbolName, int lineIndex, int wordIndex)
@@ -285,7 +398,7 @@ namespace Convention.Symbolization.Keyword
     /// </summary>
     public sealed class Else : NamespaceKeyword<Else>
     {
-        public Else(int lineIndex,int wordIndex) : base("else", lineIndex, wordIndex)
+        public Else(int lineIndex, int wordIndex) : base("else", lineIndex, wordIndex)
         {
         }
         public override Internal.Keyword CloneVariable(string targetSymbolName, int lineIndex, int wordIndex)
@@ -299,7 +412,7 @@ namespace Convention.Symbolization.Keyword
     /// </summary>
     public sealed class While : VerbObjectScopeKeyword<While>
     {
-        public While(int lineIndex,int wordIndex) : base("while", lineIndex, wordIndex)
+        public While(int lineIndex, int wordIndex) : base("while", lineIndex, wordIndex)
         {
         }
         public override Internal.Keyword CloneVariable(string targetSymbolName, int lineIndex, int wordIndex)
@@ -313,7 +426,7 @@ namespace Convention.Symbolization.Keyword
     /// </summary>
     public sealed class Break : SingleKeyword<Break>
     {
-        public Break(int lineIndex,int wordIndex) : base("break", lineIndex, wordIndex)
+        public Break(int lineIndex, int wordIndex) : base("break", lineIndex, wordIndex)
         {
         }
         public override Internal.Keyword CloneVariable(string targetSymbolName, int lineIndex, int wordIndex)
@@ -327,7 +440,7 @@ namespace Convention.Symbolization.Keyword
     /// </summary>
     public sealed class Continue : SingleKeyword<Continue>
     {
-        public Continue(int lineIndex,int wordIndex) : base("continue", lineIndex, wordIndex)
+        public Continue(int lineIndex, int wordIndex) : base("continue", lineIndex, wordIndex)
         {
         }
         public override Internal.Keyword CloneVariable(string targetSymbolName, int lineIndex, int wordIndex)
@@ -341,7 +454,7 @@ namespace Convention.Symbolization.Keyword
     /// </summary>
     public sealed class Structure : NamespaceKeyword<Structure>
     {
-        public Structure(int lineIndex,int wordIndex) : base("struct", lineIndex, wordIndex)
+        public Structure(int lineIndex, int wordIndex) : base("struct", lineIndex, wordIndex)
         {
         }
         public override Internal.Keyword CloneVariable(string targetSymbolName, int lineIndex, int wordIndex)
diff --git a/Convention/[Symbolization]/Runner/SymbolizationContext.cs b/Convention/[Symbolization]/Runner/SymbolizationContext.cs
index c9989b6..7c8878b 100644
--- a/Convention/[Symbolization]/Runner/SymbolizationContext.cs
+++ b/Convention/[Symbolization]/Runner/SymbolizationContext.cs
@@ -17,27 +17,49 @@ namespace Convention.Symbolization
         private readonly SymbolizationContext ParentContext;
         public readonly Internal.Namespace CurrentNamespace;
 
-        private void Compile(Internal.SymbolizationReader reader)
+        private void CompileToParent()
         {
-            reader.CompleteScopeWord(this);
+            if (ParentContext == null)
+                return;
         }
 
-        public void Compile(Dictionary<int, Dictionary<int, Internal.Variable>> scriptWords)
+        // Compile begin at scope words to sub context
+        public void Compile(Dictionary<Internal.Keyword, List<Internal.Variable>> scopeWords)
         {
-            // Turn the script words into scope words
-            Compile(new Internal.SymbolizationReader() { ScriptWords = scriptWords });
+            foreach (var (keyword, words) in scopeWords)
+            {
+
+            }
         }
 
+        // Compile begin at script words to scope words
+        private void CompileBeginAtScript2Scope(Internal.SymbolizationReader reader)
+        {
+            foreach (var word in reader.ScriptWords)
+            {
+                reader.ReadWord(word);
+            }
+            this.Compile(reader.ScopeWords);
+        }
+
+        // Compile begin at script words to scope words
+        public void Compile(List<Internal.Variable> scriptWords)
+        {
+            this.CompileBeginAtScript2Scope(new() { ScriptWords = scriptWords });
+        }
+
+        // Compile begin at text to script words
         public void Compile(string allText)
         {
-            // Create a new reader to parse the script words
             Internal.SymbolizationReader reader = new();
+            reader ??= new();
             foreach (char ch in allText)
                 reader.ReadChar(ch);
             // Turn the script words into scope words
-            Compile(reader);
+            this.CompileBeginAtScript2Scope(reader);
         }
 
+        // Compile begin at text to script words
         public void Compile(ToolFile file)
         {
             if (file.Exists() == false)
diff --git a/Convention/[Symbolization]/Runner/SymbolizationReader.cs b/Convention/[Symbolization]/Runner/SymbolizationReader.cs
index 4f6dd2e..45f0801 100644
--- a/Convention/[Symbolization]/Runner/SymbolizationReader.cs
+++ b/Convention/[Symbolization]/Runner/SymbolizationReader.cs
@@ -12,10 +12,11 @@ namespace Convention.Symbolization.Internal
 
         private string buffer = "";
         private int lineContext = 1;
+        private int wordContext = 0;
         private bool isOutOfStringline = true;
-        public Dictionary<int, Dictionary<int, Variable>> ScriptWords = new() { { 1, new() } };
+        public List<Variable> ScriptWords = new();
 
-        private static HashSet<char> ControllerCharSet = new()
+        private readonly static HashSet<char> ControllerCharSet = new()
         {
             '{','}','(',')','[',']',
             '+','-','*','/','%',
@@ -61,7 +62,6 @@ namespace Convention.Symbolization.Internal
             buffer = ch.ToString();
             CompleteWord();
         }
-
         void PushChar(char ch)
         {
             buffer += ch;
@@ -70,25 +70,23 @@ namespace Convention.Symbolization.Internal
         {
             if (buffer.Length > 0)
             {
-                if (ScriptWords.TryGetValue(lineContext, out var line) == false)
-                {
-                    ScriptWords.Add(lineContext, line = new());
-                }
                 if (Internal.Keyword.Keywords.TryGetValue(buffer, out var keyword))
                 {
-                    line.Add(line.Count + 1, keyword.Clone() as Internal.Variable);
+                    ScriptWords.Add(keyword.CloneVariable(buffer, lineContext, wordContext));
                 }
                 else
                 {
-                    line.Add(line.Count + 1, new ScriptWordVariable(buffer));
+                    ScriptWords.Add(new ScriptWordVariable(buffer, lineContext, wordContext + 1));
                 }
                 buffer = "";
+                wordContext++;
             }
         }
         void CompleteLine()
         {
             CompleteWord();
-            lineContext++; ;
+            lineContext++;
+            wordContext = 0;
         }
         void BeginString()
         {
@@ -106,52 +104,31 @@ namespace Convention.Symbolization.Internal
 
         #region Read Scope Words
 
-        public class KeywordEntry
-        {
-            public int line = 1;
-            public int wordIndex = 1;
-            public Dictionary<int, Dictionary<int, Variable>> Container = new();
-            public KeywordEntry(int line, int wordIndex)
-            {
-                this.line = line;
-                this.wordIndex = wordIndex;
-            }
-        }
+        public Dictionary<Keyword, List<Variable>> ScopeWords = new();
+        public Keyword currentKey = null;
+        public bool isNextKeyword = true;
 
-        public void CompleteScopeWord(SymbolizationContext rootContext)
+        public void ReadWord(Variable word)
         {
-            Dictionary<Keyword, KeywordEntry> ScopeWords = new();
-            Keyword currentKey = null;
-            bool isNextKeyword = true;
-            foreach(var line in ScriptWords)
+            if (isNextKeyword)
             {
-                int wordCounter = 1;
-                foreach (var word in line.Value)
+                if (word is Keyword cky)
                 {
-                    if (isNextKeyword)
-                    {
-                        if (word.Value is Keyword cky)
-                        {
-                            currentKey = cky;
-                            ScopeWords.Add(currentKey, new(line.Key, wordCounter));
-                            isNextKeyword = false;
-                        }
-                        else
-                        {
-                            throw new InvalidGrammarException($"Line {line.Key}, Word {wordCounter}: Expected a keyword, but got {word.Value}");
-                        }
-                    }
-                    else
-                    {
-                        var container = ScopeWords[currentKey].Container;
-                        if (container.ContainsKey(line.Key) == false)
-                            container.Add(line.Key, new() { { wordCounter, word.Value } });
-                        else
-                            container[line.Key][wordCounter] = word.Value;
-                        isNextKeyword = currentKey.ControlScope(rootContext, line.Key, word.Key, word.Value) == false;
-                    }
-                    wordCounter++;
+                    currentKey = cky;
+                    ScopeWords.Add(currentKey, new());
+                    isNextKeyword = false;
                 }
+                else
+                {
+                    throw new InvalidGrammarException(
+                        $"Line {word.SymbolInfo.LineIndex}, Word {word.SymbolInfo.WordIndex}: Expected a keyword, but got {word}"
+                        );
+                }
+            }
+            else
+            {
+                ScopeWords[currentKey].Add(word);
+                isNextKeyword = currentKey.ControlScope(word) == false;
             }
         }
 
diff --git a/[Test]/Program.cs b/[Test]/Program.cs
index 4520452..3e72f3a 100644
--- a/[Test]/Program.cs
+++ b/[Test]/Program.cs
@@ -10,10 +10,10 @@ public class Program
 {
     static void Main(string[] args)
     {
-        var context = new SymbolizationRunner();
+        var runner = new SymbolizationRunner();
         try
         {
-            context.Compile("example_script.txt");
+            runner.Compile("example_script.txt");
             Console.WriteLine("Script compiled successfully.");
         }
         catch (FileNotFoundException ex)