cakePHP routing syntax

Please, anyone can help me do a simple route?
I need that each and every url will be routed by swapping the action and the controller.
Just couldn't understood the placeholders syntax.

example:
`/files/read/3`
to 
`/read/files/3`

cakePHP routing syntax
===


Please, anyone can help me do a simple route?
I need that each and every url will be routed by swapping the action and the controller.
Just couldn't understood the placeholders syntax.

example:
`/files/read/3`
to 
`/read/files/3`
