(Apache Mod_Rewrite) Please help to condense my query
snippet in htaccess

(Apache Mod_Rewrite) Please help to condense my query

user1748

Options +FollowSymLinks
RewriteEngine On
RewriteBase /
RewriteRule ^([0-9A-Z\-]+)/?$ /xxx_$1.php [L,QSA,NC]
RewriteRule ^([0-9A-Z\-]+)/([0-9A-Z\-]+)/?$ /xxx_$1_$2.php [L,QSA,NC]
RewriteRule ^([0-9A-Z\-]+)/([0-9A-Z\-]+)/([0-9A-Z\-]+)/?$ /xxx_$1_$2_$3.php [L,QSA,NC]