Sitemap – Localization Links

So I know that alternative links should be put like the below in a sitemap…

<url> <loc></loc> <xhtml:link               rel="alternate"              hreflang="fr"              href=""              /> <xhtml:link               rel="alternate"              hreflang="en-us"              href=""              /> <xhtml:link               rel="alternate"              hreflang="en"              href=""              /> 

In the above example the fr version is the <loc>. Do I also need to create a en and en-us block with fr and en / en-us as alternatives?