import java.util.*;
import java.util.regex.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner koko = new Scanner(System.in);
        ArrayList<Integer> num= new ArrayList<>();
        int a=0;
        int total=1;
        while(total==1){
            num.add(koko.nextInt());
            if(num.get(a)==1){
                System.out.println('y');
                a++;
            }else if(num.get(a)==2){
                System.out.println('u');
                a++;
            }else if(num.get(a)==3){
                System.out.println('k');
                a++;
            }else if(num.get(a)==4){
                System.out.println('i');
                a++;
            }else if(num.get(a)==5){
                System.out.println('c');
                a++;
            }else if(num.get(a)==6){
                System.out.println('o');
                a++;
            }else if(num.get(a)==7){
                System.out.println('d');
                a++;
            }else if(num.get(a)==8){
                System.out.println('e');
                a++;
            }else if(num.get(a)==9){
                System.out.println('r');
                a++;
            }else if(num.get(a)==0){
                total=0;
            }
        }
    }
}