User-agent: *
Disallow: /yummy/
Disallow: /gene
Disallow: /bob
Disallow: /trap
Disallow: /gene/
Crawl-Delay: 25

User-Agent: AhrefsBot 
Disallow: /

User-Agent: MJ12bot
Disallow: /
Crawl-Delay: 20

User-agent: dotbot
Disallow: /Dictator
Crawl-delay: 40