class A{
    protected $portal;
    protected $language;
    protected $page;
    protected $name;
    protected $background;
}

class B{
    protected $portal;
    protected $language;
    protected $page;
    protected $name;
    protected $color;
}

class C{
    protected $portal;
    protected $language;
    protected $page;
    protected $name;
    protected $text;
}