class Test5_11
{ 
	public static void main(String[ ] args)
      	{
 		StringBuffer str=new StringBuffer("й");
         	str.insert(0,"");
         	str.setCharAt(1 ,''); 
         	System.out.println(str); 
         	str.append("꣡");
         	System.out.println(str);
         	str.reverse();
         	System.out.println(str);
      	}
}
