куда прописывать данные правила для Nginx?

rewrite "^/tags/([^/]*)/f/(.*)/page/([0-9]+)(/?)+$" /index.php?do=filter&tag=$1&form_field=$2&cstart=$3 last;
rewrite "^/tags/([^/]*)/f/(.*)(/?)+$" /index.php?do=filter&tag=$1&form_field=$2 last;
rewrite "^/xfsearch/(.*)/f/(.*)/page/([0-9]+)(/?)+$" /index.php?do=filter&xf=$1&form_field=$2&cstart=$3 last;
rewrite "^/xfsearch/(.*)/f/(.*)(/?)+$" /index.php?do=filter&xf=$1&form_field=$2 last;
if (!-d $request_filename) {
	rewrite "^/([^.]+)/f/(.*)/page/([0-9]+)(/?)+$" /index.php?do=filter&cat_filter=$1&form_field=$2&cstart=$3 last;
	rewrite "^/([^.]+)/f/(.*)(/?)+$" /index.php?do=filter&cat_filter=$1&form_field=$2 last;
}
rewrite "^/f/(.*)/page/([0-9]+)(/?)+$" /index.php?do=filter&form_field=$1&cstart=$2 last;
rewrite "^/f/(.*)(/?)+$" /index.php?do=filter&form_field=$1 last;