/* package whatever; // don't place package name! */

import java.util.*;
class M{
  static String c(String i){
    Random r = new Random();
    int x = r.nextInt(2),
        j = r.nextInt(i.length());
    return x < 1
            ? i : i.substring(0, j - (x%2 ^ 1)) + (x<2?i.charAt(j):"") + i.substring(j);
  }

  public static void main(String[] a){
    for(int i = 0; i < 5; i++){
      System.out.println(c("foo"));
    }
    System.out.println();
    for(int i = 0; i < 5; i++){
      System.out.println(c("PPCG"));
    }
  }
}