RewriteEngine On

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d

RewriteCond %{REQUEST_URI} !\.(jpg|jpeg|png|gif|css|js)$ [NC]
#RewriteRule ^verification/([0-9a-zA-Z_]+) index.php?sub_service=$1 [NC]
#RewriteRule ^([0-9a-zA-Z_]+)([0-9a-zA-Z_-]*) index.php?page=$1&sub_service=$2 [NC,L]
RewriteRule ^([^/]+)(/([a-zA-Z0-9_-]+))?(/(\d+))?/?$ index.php?page=$1&sub_service=$3&id=$5 [NC,L]