package de.codegym.task.task07.task0727;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
/*
Funktionalität ändern
*/
public class Solution {
public static void main(String[] args) throws IOException {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
ArrayList<String> liste = new ArrayList<String>();
while (true) {
String s = reader.readLine();
if (s.isEmpty()) break;
liste.add(s);
}
ArrayList<String> duplication = new ArrayList<String>();
for (int i = 0; i < liste.size(); i++) {
String s = liste.get(i);
int j = liste.get(i).length();
if(j % 2 == 0){
liste.add(i, liste.get(i));
}else{
liste.add(i, liste.get(i));
liste.add(i, liste.get(i));
}
}
System.out.println(duplication);
}
}