class forLoops{
   public static void main(String[] args) {



      for (int x = 1; x < 11; x++){
            System.out.println(x);
         }




         for (int y = 10; y > 0; y--){
            System.out.println (y);
         }




         for (int z = 0; z < 21; z = z + 4){
            System.out.println (z);
         }




      for (int a = 1; a < 11; a++ ){

         for (int b = 1; b <= a;  b++){

            System.out.print("*");
         }
         System.out.println("");
      }






   }
}