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// flip the positions of the site title and site description
remove_action( 'genesis_site_title', 'genesis_seo_site_title' );
remove_action( 'genesis_site_description', 'genesis_seo_site_description' );

add_action( 'genesis_site_title', 'genesis_seo_site_description' );
add_action( 'genesis_site_description', 'genesis_seo_site_title' );