<link rel="alternate" href="example.com/about-us" hreflang="x-default" />
<link rel="alternate" href="example.com/about-us" hreflang="en-us" />
<link rel="alternate" href="example.com/it/about-us" hreflang="it-it" />
<link rel="alternate" href="example.com/de/about-us" hreflang="pt-pt" />