Nginx rewrite rules For WordPress

I'm looking for a way to implement WordPress's simple htaccess pretty url rules for Nginx.

# BEGIN WordPress

RewriteEngine On
RewriteBase /blog/
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /blog/index.php [L]

# END WordPress

update: here are my rules, which seem to work.

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