User-Agent: *
Disallow: /400.html
Disallow: /401.html
Disallow: /403.html
Disallow: /404.html
Disallow: /500.html
Disallow: /400.shtml
Disallow: /401.shtml
Disallow: /403.shtml
Disallow: /404.shtml
Disallow: /500.shtml