how to write htaccess rules?

Hi!, I have 2 rules declarations in htaccess 1) To prevent HOT LINKING RewriteEngine on RewriteCond %{HTTP_REFERER} !^$ RewriteCond %{HTTP_REFERER} !^http://example.com/.*$ [NC] RewriteCond %{HTTP_REFERER} !^http://example.com$ [NC] RewriteCond %{HTTP_REFERER} !^http://www.example.com/.*$ [NC] RewriteCond %{HTTP_REFERER} !^http://www.example.com$ [NC] RewriteRule .*\.(.*)$ http://www.example.com [R,NC] 2) To redirect "example.com" to "www.example.com" RewriteEngine On RewriteBase / RewriteCond %{HTTP_HOST} ^example\.com$ [NC] RewriteRule ^(.*)$ http://www.example.com/$1 [R=301,L] How can i declare both in combined and efficient form (so that both works) in my htaccess file???

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