URL route for a module in Yii2, how to set it correctly?

Question

Yii

The question is how to correctly write routes in Yii2 basic to call the controller and action
so that the url is of the form hostname/site/moduleName/controllerName/actionName ?
trying to do so

'rules' => [
                '/' => 'site/index',
                '<controller:\w+>/<action:\w+>' => '<controller>/<action>',
//                '<module:\w+>/<controller:\w+>/' => '<module>/<controller>/index',
                'site/<module:admin>/<controller:\w>/<action:\w+>'=>'site/<module>/<controller>/<action>'
//                '<module:admin>/<controller:\w+>' => '<module>/<controller>/index',
            ],

but it throws out 404