I want to remove controller name from every controller is it possible to do like this in route file.For single controller it is working fine for me what if I want to use for all controller in my project?

```
$route['default_controller'] = 'user';
$route['(:any)'] = "user/$1";
$route['(:any)/(:any)'] = "user/$1/$1";
$route['(:any)/(:any)/(:any)'] = "user/$1/$1/$1";

$route['(:any)'] = "grant/$1";
$route['(:any)/(:any)'] = "grant/$1/$1";
$route['(:any)/(:any)/(:any)'] = "grant/$1/$1/$1";

```

when I tried this its not working for me.