User-agent: *
Disallow: /mobile

User-Agent: Googlebot-Mobile
Disallow: /
Allow: /mobile

User-agent: Y!J-MBS
Disallow: /
Allow: /mobile

User-agent: Y!J-SRD
Disallow: /
Allow: /mobile

User-agent: LD_mobile_bot
Disallow: /
Allow: /mobile

User-agent: ichiro/mobile
Disallow: /
Allow: /mobile