Sitemap – Localization Links

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

<url> <loc>http://www.mywebsite.com/lang/french/</loc> <xhtml:link               rel="alternate"              hreflang="fr"              href="http://www.mywebsite.com/lang/french/"              /> <xhtml:link               rel="alternate"              hreflang="en-us"              href="http://www.mywebsite.com/lang/us/"              /> <xhtml:link               rel="alternate"              hreflang="en"              href="http://www.mywebsite.com/"              /> 

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?