User-agent: *
Disallow: /*?

User-agent: Googlebot
Allow: /*?

User-agent: Googlebot-Image
Allow: /*?

User-agent: Googlebot-Mobile
Allow: /*?

User-agent: Googlebot-Video
Allow: /*?

User-agent: Googlebot-News
Allow: /*?

User-agent: Bingbot
Allow: /*?

User-agent: msnbot
Allow: /*?

User-agent: bingbot-mobile
Allow: /*?

User-agent: Baiduspider
Allow: /*?

User-agent: Baiduspider-image
Allow: /*?

User-agent: Baiduspider-video
Allow: /*?

User-agent: YandexBot
Allow: /*?

User-agent: YandexBot-Image
Allow: /*?

User-agent: YandexBot-Mobile
Allow: /*?

User-agent: Sogou web spider
Allow: /*?

User-agent: Sogou Pic Spider
Allow: /*?

User-agent: 360Spider
Allow: /*?

User-agent: HaosouSpider
Allow: /*?

User-agent: Sosoimagespider
Allow: /*?

User-agent: Sosospider
Allow: /*?