User-agent: Twiceler-0.9
Disallow: /

User-agent: Googlebot-Image
Disallow: /

User-agent: Purebot/1.1
Disallow: /

User-agent: Yandex/1.01.001
Disallow: /

User-agent: Googlebot/2.1
Disallow: /

User-agent: googlebot
Disallow: /