public class Fee extends Fo $\{$

public void method$1()\{$

System.out.println$("$Fee $1")$;

super.method$3()$;

$\}$

public void method$3()\{$

System.out.println$("$Fee $3")$;

$\}$

$\}$

public class Fie extends Fum $\{$

public void method$1()\{$

System.out.println$("$Fie $1")$;

$\}$

public void method$3()\{$

System.out.println$("$Fie $3")$;

super.method$3()$;

$\}$

$\}$

public class Fo $\{$

public void method$2()\{$

System.out.println$("$Fo $2")$;

method$3()$;

$\}$

public void method$3()\{$

System.out.println$("$Fo $3")$;

$\}$

$\}$

public class Fum extends Fo $\{$

public void method$3()\{$

System.out.println$("$Fum $3")$;

$\}$

$\}$

Suppose the following variables are defined:

Fum var$1=$ new Fie$()$;

Object var$2=$ new Fum$()$;

Fo var$3=$ new Fee$()$;

Object var$4=$ new Fie$()$;

Object var$5=$ new Fo$()$;

Fum var$6=$ new Fum$()$;