class Bird{
{ System.out.println("b1 ");}
public Bird(){
System.out.println("b2 ");
}
}
class Raptor extends Bird{
static { System.out.println("r1 ");}
public Raptor(){
System.out.println("r2 ");
}
{ System.out.println("r3 ");}
static { System.out.println("r4 ");}
}
class Hawk extends Raptor{
public static void main(String[] args) {
System.out.println("pre ");
new Hawk();
System.out.println("hawk");
}
}
