How to set up a redirect to a mobile site with rearrangement of url parts?

Question

Apache HTTP Server

There are several sites with addresses a.site.com, b.site.com, etc. And one mobile site m.site.com
Question: Is it possible to set up redirection from the main sites to the mobile one in htacces according to the following rule.
User enters address: a.site.com/category/page
It should redirect to: m.site.com/a/category/page

Answer 1

I realized that the question is not correct. I close.