User-agent: *
Disallow: /track/
Disallow: /forum/

User-agent: Googlebot-Image
Disallow: *-o-*
Disallow: *-orig-*
Disallow: *-lb-*

User-agent: BUbiNG
Disallow: /

User-agent: AhrefsBot 
Disallow: /

User-agent: dotbot
Disallow: /

User-agent: SemrushBot
Disallow: /