import java.awt.*;
public class Sb{
    public static void main(String[] args){
        Frame f=new Frame();
        f.setSize(300,300);
        f.setLayout(new GridLayout(2,1));
        Panel p1=new Panel();
        p1.setLayout(new BorderLayout());
        Panel p1_1=new Panel();
        p1_1.setLayout(new GridLayout(2,1));
        Button bn1=new Button("sb1");
        Button bn2=new Button("sb2");
        Button bn3=new Button("sb3");
        Button bn4=new Button("sb4");
        p1.add(bn1,BorderLayout.WEST);
        p1_1.add(bn3);
        p1_1.add(bn4);
        p1.add(p1_1,BorderLayout.CENTER);
        p1.add(bn2,BorderLayout.EAST);
        f.add(p1);
        f.pack();
            }
}