Friendly and pages regular expression

[informatica810]

Hi, I am trying to fix this with a reg expression but I dont know how.

Here is the example:

I would like to have my link like this:

mysite.com/noticias/123/here-comes-the-title-page-2

I have a mod_rewrite rule with this:

RewriteRule ^/noticias/([a-zA-Z0-9]+)/([a-zA-Z0-9-]+)-(pagina)-([0-9]+)$ /myphp.php?&id=$1&ipag=$4 [L,NC]

It doesnt work. I think that the problem resides here ([a-zA-Z0-9-]+) because the title is split with "-" and the rule doenst know when the title finish.

Now, if I have a rule like this it works:

mysite.com/noticias/123/here-comes-the-title_page-2

RewriteRule ^/noticias/([a-zA-Z0-9]+)/([a-zA-Z0-9-]+)_(pagina)-([0-9]+)$ /myphp.php?&id=$1&ipag=$4 [L,NC]

How can I fix this to have a "-pagina" instead of "_pagina"

Thanks

[SanketPatel]

May I know the platform of website ? If it is wordpress, just one plugin is needed in that case.