/* Parse stack was:
 commandset**/


 /* Java code generated by "translate.java.pss" */
 import java.io.*;
 import java.util.regex.*;
 import java.util.*;   // contains stack

 public class javased {
   public StringBuffer patternSpace;
   public StringBuffer holdSpace;
   public int linesRead;
   private Scanner input; 
   private boolean eof;

   /** make a new machine with a character stream reader */
   public javased(Scanner scanner) {
     this.patternSpace = new StringBuffer(""); 
     this.holdSpace = new StringBuffer(""); 
     this.linesRead = 1;
     this.input = scanner;
     this.eof = false;
   }

   /** read one line from the input stream and update the machine. */
   public void readLine() {
     int iChar;
     // try {
       if (this.eof) { System.exit(0); }
       // increment lines
       this.linesRead++;
       if (this.input.hasNext()) {
         this.patternSpace.append(this.input.next());
       } else { this.eof = true; }
     //}
     //catch (IOException ex) {
     //  System.out.println("Error reading input stream" + ex);
     //  System.exit(-1);
     //}
   }

   /** command "x": swap the pattern-space with the work-space */
   public void swap() {
     String s = new String(this.patternSpace);
     this.patternSpace.setLength(0);
     this.patternSpace.append(this.holdSpace.toString());
     this.holdSpace.setLength(0);
     this.holdSpace.append(s);
   }

   /** save the patternspace to file "sav.pp" */
   public void writeToFile(String fileName) {
     try {
       File file = new File(fileName);
       Writer out = new BufferedWriter(new OutputStreamWriter(
          new FileOutputStream(file), "UTF8"));
       out.append(this.patternSpace.toString());
       out.flush(); out.close();
     } catch (Exception e) {
       System.out.println(e.getMessage());
     }
   }
   public static void main(String[] args) throws Exception { 
     String temp = "";    
     javased mm = new javased(new Scanner(System.in)); 
     while (!mm.eof) {
       mm.readLine();
/* [ok] Sed syntax appears ok */
/* ---------------------      */
/*
p;  # print pattern-space
d;  # delete pattern-space, restart
*/