htaccess rewriterule not working if multiple levels

I have a problem with my htaccess rule.
I am using WordPress and in my htaccess there is nothing except the default wordpress code.

I have this rewrite rule working:

RewriteRule aa/bb http://www.example.com?catID=id1&prodID=id2

It shows aa/bb in the address bar and shows me the content of http://www.example.com?catID=id1&prodID=id2

When I add another level, it doesn’t work, for example:

RewriteRule aa/bb/cc http://www.example.com?catID=id1&prodID=id2

How can I solve this and add as many levels as I want?