Can this be written more efficient?

[Moldarin]

Hi,

Can I somehow write this more efficient? And maybe actually get it working too? :D

[code]RewriteEngine On
RewriteCond %{HTTP_HOST} ^second-domain\.com$ [NC,OR]
RewriteCond %{HTTP_HOST} ^www\.second-domain\.com$ [NC,OR]
RewriteCond %{HTTP_HOST} ^thirddomain\.com$ [NC,OR]
RewriteCond %{HTTP_HOST} ^www\.thirddomain\.com$ [NC,OR]
RewriteCond %{HTTP_HOST} ^www\.first-domain\.info$ [NC,OR]
RewriteCond %{HTTP_HOST} ^www\.first-domain\.com$ [NC,OR]
RewriteRule ^(.*)$ http://first-domain.com/$1 [R=301,L][/code]

It works if I drop ",OR" and add a rule under each condition though... But then it runs slow as *!