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Allow: /blog/
Allow: /blog.php
Allow: /index.html
Allow: /history/
Disallow: /gallery
Disallow: /gallery/
Disallow: /gallery2/

User-agent: Googlebot
Allow: /blog/
Allow: /blog.php
Disallow: /gallery
Disallow: /gallery2

User-agent: Googlebot-Image
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Disallow: /gallery2/

User-agent: psbot
Disallow: /gallery
Disallow: /gallery2/