URL Rewrite for alias with parameter

When we need to redirect certain alias to another url,

we can modify htaccess file to handle redirection with the code below:

Example: redirect blabla to /articles/index

RewriteRule ^blabla(/)? /articles/index$1 [R,L]

The above work if our url goes:

http://www.example.com/blabla or http://www.example.com/blabla/

If we may have sub folders within bla bla or need to pass in additional parameter (as common in zend framework):

RewriteRule ^blabla(/)?(.+)? /articles/index$1$2 [R,L]

The above work if our url goes:

http://www.example.com/blabla/page/2/xyz/aaa

to

http://www.example.com/articles/index/page/2/xyz/aaa