I cant seem to get my htaccess code right for redirecting pages that appear like the below to go to a 410 page, eg:

www.domain.com/-c-23.html
www.domain.com/-c-12.html
www.domain.com/-c-755.html

Basically, I want a rule whereby anything where "-c-" comes directly after the slash of the domain gets sent to a 410. I have been trying to do this but my code isnt working, so far I have something like this:

RewriteRule ^/\-c\-[0-9]+\.html$ - [G]

But this makes no difference at all, any idea why this is not working? Thanks!

Chris