User-agent: dotbot 
Disallow: /
User-agent: Exabot
Disallow: /
User-agent: TurnitinBot
Disallow: /
User-agent: Speedy
Disallow: /
User-agent: Linguee
Disallow: /
User-agent: twiceler
Disallow: /
User-agent: Twiceler-0.9
Disallow: /
User-agent: Twiceler
Disallow: /