diff --git a/src/main/java/InvertedIndex.java b/src/main/java/InvertedIndex.java
index 684fc0a..472a7ca 100644
--- a/src/main/java/InvertedIndex.java
+++ b/src/main/java/InvertedIndex.java
@@ -58,7 +58,6 @@ public void indexFile(File file) throws IOException {
     public Set<String> search(ArrayList<String> wordsToFind) {
         Set<String> answer = new HashSet<>();
         for (String words : wordsToFind) {
-
             String word = words.toLowerCase();
             for (String key : indexedWords.keySet()) {
                 Matcher matcher = Pattern.compile(word).matcher(key);
@@ -113,10 +112,9 @@ public Set<String> findCommonWords(ArrayList<Set<String>> wordsToFindCommon) {
     private static class Tuple {
         private final int fileNumber;
 
-        public Tuple(int fileno) {
-            this.fileNumber = fileno;
+        public Tuple(int fileNumber) {
+            this.fileNumber = fileNumber;
         }
-
     }
 }
  
\ No newline at end of file
diff --git a/src/main/java/Main.java b/src/main/java/Main.java
index 3163bf3..370ac02 100644
--- a/src/main/java/Main.java
+++ b/src/main/java/Main.java
@@ -4,11 +4,12 @@
 
 public class Main {
     public static void main(String[] args) {
+        preprocesses();
+    }
 
+    public static void preprocesses() {
         File directoryPath = new File("C:\\Users\\ASUS\\IdeaProjects\\codestar\\src\\main\\resources\\EnglishData");
         File[] filesList = directoryPath.listFiles();
-
-
         try {
             InvertedIndex idx = new InvertedIndex();
             assert filesList != null;
diff --git a/src/main/java/TakeInput.java b/src/main/java/TakeInput.java
index 3e790f4..512392e 100644
--- a/src/main/java/TakeInput.java
+++ b/src/main/java/TakeInput.java
@@ -1,4 +1,5 @@
 package main.java;
+
 import java.util.*;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
@@ -6,7 +7,6 @@
 public class TakeInput {
 
     public TakeInput(InvertedIndex idx) {
-        System.out.println("1");
         getOrder(idx);
     }
 
@@ -15,26 +15,40 @@ public void getOrder(InvertedIndex idx) {
         while (true) {
             String input = scanner.nextLine();
             String[] inputSplited = input.split("(\\s+)");
+            if (input.equals("--back"))
+                break;
             ArrayList<String> plusStrings = new ArrayList<>();
             ArrayList<String> minusStrings = new ArrayList<>();
             ArrayList<String> normalStrings = new ArrayList<>();
-            for (String string : inputSplited) addItemToOneOfThreeArrayLists(string, plusStrings, minusStrings, normalStrings);
-            Set<String> answer = idx.search(plusStrings);
-            Set<String> toDelete = idx.search(minusStrings);
-            ArrayList<Set<String>> commons = new ArrayList<>();
-            for (String normalString : normalStrings) {
-                ArrayList<String> arrayList = new ArrayList<>();
-                arrayList.add(normalString);
-                commons.add(idx.search(arrayList));
-            }
-            answer = idx.findCommonFiles(answer, commons);
-            System.out.println(answer);
-            answer = idx.deleteGivenFiles(answer, toDelete);
-            for (String s : answer) System.out.println(s);
+            for (String string : inputSplited)
+                addItemToOneOfThreeArrayLists(string, plusStrings, minusStrings, normalStrings);
+            showResult(processes(idx, plusStrings, minusStrings, normalStrings));
+        }
+    }
+
+    private void showResult(Set<String> answer) {
+        for (String s : answer) System.out.println(s);
+
+    }
+
+    private Set<String> processes(InvertedIndex idx, ArrayList<String> plusStrings,
+                                  ArrayList<String> minusStrings, ArrayList<String> normalStrings) {
+        Set<String> answer = idx.search(plusStrings);
+        Set<String> toDelete = idx.search(minusStrings);
+        ArrayList<Set<String>> commons = new ArrayList<>();
+        for (String normalString : normalStrings) {
+            ArrayList<String> arrayList = new ArrayList<>();
+            arrayList.add(normalString);
+            commons.add(idx.search(arrayList));
         }
+        answer = idx.findCommonFiles(answer, commons);
+        System.out.println(answer);
+        answer = idx.deleteGivenFiles(answer, toDelete);
+        return answer;
     }
 
-    private void addItemToOneOfThreeArrayLists(String string, ArrayList<String> plusStrings, ArrayList<String> minusStrings, ArrayList<String> normalStrings) {
+    private void addItemToOneOfThreeArrayLists(String string, ArrayList<String> plusStrings,
+                                               ArrayList<String> minusStrings, ArrayList<String> normalStrings) {
         Pattern pattern = Pattern.compile("^\\+(.+)$");
         Matcher matcher = pattern.matcher(string);
         Pattern pattern1 = Pattern.compile("^-(.+)$");