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