User-agent: *
Disallow: /22/description.php
Disallow: /21/description.php 
Disallow: /21/recommended_use.php 
Disallow: /19/description.php
Disallow: /19/recommended_use.php 
Disallow: /es/20/description.php 
Disallow: /es/21/description.php 
Disallow: /es/20/recommended_use.php 


Allow: /