Public Class A
 
    Protected Class AA
 
    End Class
End Class
 
Public Class B
    Inherits A
 
    Protected Class BB
        Inherits AA 'Nicht definiert
 
    End Class
 
    Protected Class CC
        Inherits A.AA 'Nicht zugreifbar
 
    End Class
 
    Protected Class DD
        Inherits B.AA 'Nicht definiert
 
    End Class
End Class