User-agent: Googlebot
Allow: /

User-agent: Bingbot
Allow: /

User-agent: YandexBot
Allow: /

User-agent: Slurp
Allow: /

User-agent: Baiduspider
Allow: /

User-agent: Applebot
Allow: /

User-agent: Facebot
Allow: /

User-agent: Twitterbot
Allow: /

Disallow: /404

User-agent: *
Disallow: /