User-agent: *
  Disallow: /
  
  User-agent: Googlebot
  Disallow:

  User-agent: Googlebot-News
  Disallow:
  
  User-agent: Googlebot-Video
  Disallow:

  User-agent: Mediapartners-Google
  Disallow:

  User-agent: Adsbot-Google
  Disallow:

  User-agent: Googlebot-Image
  Disallow:

  User-agent: Googlebot-Mobile
  Disallow:
  
  User-agent: Twitterbot
  Disallow:
  
  User-agent: Twitterbot/1.0
  Disallow: