import java.util.*;
public class tab12{
	public static void main(String[]args){
		Random r = new Random();
		char tab[] = new char[10];
		for (int s = 0; s<tab.length; s++){
			tab[s] = (char) ('a' + r.nextInt(5));
			System.out.print(tab[s]+" ");
		}
		System.out.println();
		for (int s = 0; s<tab.length; s++){
			tab[s] = (char) (tab[s] + 1);
			System.out.print(tab[s]+" ");
		}
	}
}