User-agent: *
Disallow: /wp-admin/
Allow: /wp-admin/admin-ajax.php
Disallow: /wp-includes/
Allow: /wp-includes/js/
Allow: /wp-includes/images/
Disallow: /trackback/
Disallow: /wp-login.php
Disallow: /wp-register.php
Disallow: /?s=*
Disallow: *.pdf  # Block pdf files.

User-agent: MJ12bot
Disallow: /
Sitemap: /sitemap_index.xml
Sitemap: /news-sitemap.xml