package zimu;

public class A {

    public void f()

    {

        for (int i = 97; i <123; i++)

        {

            System.out.print((char)i);            

        }

        System.out.println();

    }

}

package zimu;

public class B extends A {

    public void g()

    {

        for (int i = 65; i <91; i++)

        {

            System.out.print((char)i);

        }

        System.out.println();

    }

}

package zimu;

public class C {

    public static void main(String[] args) {

    A a=new A();

    a.f();

    B b=new B();

    b.f();

    b.g();

    }

}