diff --git a/test/ascii-art.nas b/test/ascii-art.nas
index ed3e95b..586e714 100644
--- a/test/ascii-art.nas
+++ b/test/ascii-art.nas
@@ -2,32 +2,32 @@ import.stl.padding;
 
 var char_ttf=[
     ["    ","    ","    ","    ","    ","    "],
-    ["    ████╗","   ██╔██║","  ██╔╝██║"," ███████║","██╔═══██║","╚═╝   ╚═╝"],
+    [" █████╗ ","██╔══██╗","███████║","██╔══██║","██║  ██║","╚═╝  ╚═╝"],
     ["██████╗ ","██╔══██╗","██████╔╝","██╔══██╗","██████╔╝","╚═════╝ "],
     [" ██████╗","██╔════╝","██║     ","██║     ","╚██████╗"," ╚═════╝"],
     ["██████╗ ","██╔══██╗","██║  ██║","██║  ██║","██████╔╝","╚═════╝ "],
     ["███████╗","██╔════╝","█████╗  ","██╔══╝  ","███████╗","╚══════╝"],
     ["███████╗","██╔════╝","█████╗  ","██╔══╝  ","██║     ","╚═╝     "],
-    [" █████╗ ","██╔═══╝ ","██║ ██╗ ","██║ ╚██╗","╚█████╔╝"," ╚════╝ "],
+    [" ██████╗ ","██╔════╝ ","██║  ███╗","██║   ██║","╚██████╔╝"," ╚═════╝ "],
     ["██╗  ██╗","██║  ██║","███████║","██╔══██║","██║  ██║","╚═╝  ╚═╝"],
-    [" ██████╗","   ██╔═╝","   ██║  ","   ██║  "," ██████╗"," ╚═════╝"],
+    ["██╗","██║","██║","██║","██║","╚═╝"],
     ["     ██╗","     ██║","     ██║","██   ██║","╚█████╔╝"," ╚════╝ "],
     ["██╗  ██╗","██║ ██╔╝","█████╔╝ ","██╔═██╗ ","██║  ██╗","╚═╝  ╚═╝"],
     ["██╗     ","██║     ","██║     ","██║     ","███████╗","╚══════╝"],
-    ["██╗   ██╗","███╗ ███║","████████║","██╔██╔██║","██║╚═╝██║","╚═╝   ╚═╝"],
-    ["██╗   ██╗","███╗  ██║","█████╗██║","██╔█████║","██║ ╚███║","╚═╝  ╚══╝"],
+    ["███╗   ███╗","████╗ ████║","██╔████╔██║","██║╚██╔╝██║","██║ ╚═╝ ██║","╚═╝     ╚═╝"],
+    ["███╗   ██╗","████╗  ██║","██╔██╗ ██║","██║╚██╗██║","██║ ╚████║","╚═╝  ╚═══╝"],
     [" ██████╗ ","██╔═══██╗","██║   ██║","██║   ██║","╚██████╔╝"," ╚═════╝ "],
     ["██████╗ ","██╔══██╗","██████╔╝","██╔═══╝ ","██║     ","╚═╝     "],
-    [" ██████╗ ","██╔═══██╗","██║   ██║","██║  ██╔╝","╚████╔██╗"," ╚═══╝╚═╝"],
+    [" ██████╗ ","██╔═══██╗","██║   ██║","██║▄▄ ██║","╚██████╔╝"," ╚══▀▀═╝ "],
     ["██████╗ ","██╔══██╗","██████╔╝","██╔══██╗","██║  ██║","╚═╝  ╚═╝"],
     ["███████╗","██╔════╝","███████╗","╚════██║","███████║","╚══════╝"],
     ["████████╗","╚══██╔══╝","   ██║   ","   ██║   ","   ██║   ","   ╚═╝   "],
     ["██╗   ██╗","██║   ██║","██║   ██║","██║   ██║","╚██████╔╝"," ╚═════╝ "],
     ["██╗   ██╗","██║   ██║","██║   ██║","╚██╗ ██╔╝"," ╚████╔╝ ","  ╚═══╝  "],
-    ["██╗   ██╗","██║██╗██║","████████║","███╔═███║","██╔╝ ╚██║","╚═╝   ╚═╝"],
+    ["██╗    ██╗","██║    ██║","██║ █╗ ██║","██║███╗██║","╚███╔███╔╝"," ╚══╝╚══╝ "],
     ["██╗  ██╗","╚██╗██╔╝"," ╚███╔╝ "," ██╔██╗ ","██╔╝╚██╗","╚═╝  ╚═╝"],
     ["██╗   ██╗","╚██╗ ██╔╝"," ╚████╔╝ ","  ╚██╔╝  ","   ██║   ","   ╚═╝   "],
-    ["████████╗","╚════██╔╝","   ██╔═╝ "," ██╔═╝   ","████████╗","╚═══════╝"],
+    ["███████╗","╚══███╔╝","  ███╔╝ "," ███╔╝  ","███████╗","╚══════╝"],
 ];
 var trans_ttf=func(string){
     var str=["","","","","",""];
@@ -47,7 +47,7 @@ var trans_ttf=func(string){
         println(i);
     return;
 }
-var curve1=func(line=6){
+var curve1=func(line=4){
     var table=["╚","═","╝","╔","║","╗"];
     rand(100);
     var s="";
@@ -58,7 +58,7 @@ var curve1=func(line=6){
     }
     print(s);
 }
-var curve2=func(line=3){
+var curve2=func(line=2){
     var shadow=["░","▒","▓","█","▀","▄","▐","▌"];
     rand(100);
     var s="";
@@ -69,7 +69,7 @@ var curve2=func(line=3){
     }
     print(s);
 }
-var curve3=func(line=3){
+var curve3=func(line=2){
     var arr=[
         0,1,2,3,4,5,6,7,8,
         0,1,2,3,4,5,6,7,8,
@@ -91,7 +91,7 @@ var curve3=func(line=3){
     }
     return;
 }
-var curve4=func(line=6){
+var curve4=func(line=4){
     var shadow=["m░\e[0m","m▒\e[0m","m▓\e[0m","m█\e[0m","m▀\e[0m","m▄\e[0m","m▐\e[0m","m▌\e[0m"];
     var front=[
         "30","31","32","33","34","35","36","37",
@@ -108,7 +108,7 @@ var curve4=func(line=6){
         print('\n');
     }
 }
-var curve5=func(line=6){
+var curve5=func(line=4){
     var vec=["▀▄─","▄▀─","▀─▄","▄─▀"];
     for(var (y,p)=(0,0);y!=line;y+=1){
         for(var x=0;x!=15;x+=1)
@@ -139,7 +139,6 @@ var ansi_escape_sequence=func(){
 # enable unicode
 if(os.platform()=="windows")
     system("chcp 65001");
-trans_ttf("just for test");
 trans_ttf(" ValKmjolnir ");
 curve1();
 curve2();
diff --git a/test/word_collector.nas b/test/word_collector.nas
index 95fadcb..7e850ed 100644
--- a/test/word_collector.nas
+++ b/test/word_collector.nas
@@ -1,49 +1,56 @@
 import.stl.sort;
-var argv=runtime.argv();
 
-if(size(argv)<1){
-    println("no input files.");
-    exit(-1);
-}
-
-var all_exists=1;
-foreach(var f;argv){
-    if(!io.exists(f)){
-        println("cannot open file <",f,">");
-        all_exists=0;
+var to_lower=func(s){
+    var tmp="";
+    for(var i=0;i<size(s);i+=1){
+        var c=s[i];
+        if('a'[0]<=c and c<='z'[0])
+            tmp~=chr(c);
+        elsif('A'[0]<=c and c<='Z'[0])
+            tmp~=chr(c-'A'[0]+'a'[0]);
+        else
+            tmp~=chr(c);
     }
+    return tmp;
 }
 
-if(!all_exists){
-    exit(-1);
-}
-
-var to_lower=func(c){
-    if('a'[0]<=c[0] and c[0]<='z'[0])
-        return c;
-    elsif('A'[0]<=c[0] and c[0]<='Z'[0])
-        return chr(c[0]-'A'[0]+'a'[0]);
-    return c;
-}
-
-var file_content="";
-foreach(var f;argv)
-    file_content~=io.fin(f)~" ";
-var token={};
-var len=size(file_content);
-var s="";
-for(var i=0;i<len;i+=1){
-    var n=file_content[i];
-    var c=chr(n);
-    if(('a'[0]<=n and n<='z'[0]) or ('A'[0]<=n and n<='Z'[0]) or n=='\''[0] or n=='-'[0]){
-        s~=to_lower(c);
-    }elsif(size(s)){
-        if(s[0]!="-"[0] and s[0]!="'"[0] and s[-1]!="-"[0] and s[-1]!="'"[0])
-            token[s]+=1;
-        s="";
+var spliter=func(content){
+    var token={};
+    var len=size(content);
+    var s="";
+    for(var i=0;i<len;i+=1){
+        var n=content[i];
+        var c=chr(n);
+        if(('a'[0]<=n and n<='z'[0]) or ('A'[0]<=n and n<='Z'[0]) or n=='\''[0] or n=='-'[0]){
+            s~=c;
+        }elsif(size(s)){
+            if(s[0]!="-"[0] and s[0]!="'"[0] and s[-1]!="-"[0] and s[-1]!="'"[0])
+                token[to_lower(s)]+=1;
+            s="";
+        }
     }
+    return token;
 }
 
-var vec=keys(token);
-sort(vec,func(a,b){return cmp(a,b)<=0;});
-println(vec);
\ No newline at end of file
+func(argv){
+    if(size(argv)<1){
+        println("no input files.");
+        exit(-1);
+    }
+    var all_exists=1;
+    foreach(var f;argv){
+        if(!io.exists(f)){
+            println("cannot open file <",f,">");
+            all_exists=0;
+        }
+    }
+    if(!all_exists){
+        exit(-1);
+    }
+    var file_content="";
+    foreach(var f;argv)
+        file_content~=io.fin(f)~" ";
+    var vec=keys(spliter(file_content));
+    sort(vec,func(a,b){return cmp(a,b)<=0;});
+    println(vec);
+}(runtime.argv());
\ No newline at end of file