import java.util.*;
import java.io.*;
public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		PrintWriter ou = new PrintWriter(System.out);
		String s = sc.next();
		for(int i = 0 ; i < 26 ; i++){
			if(s.charAt(i) - 97 != i) ou.println((char)(i + 97) + "to" + s.charAt(i));
		}
		ou.flush();
		sc.close();
	}
}