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SELECT DISTINCT * FROM wp_posts LEFT JOIN wp_post2cat ON (wp_posts.ID = wp_post2cat.post_id) LEFT JOIN wp_categories ON (wp_post2cat.category_id = wp_categories.cat_ID) WHERE 1=1 AND (category_nicename = 'test-preparation' OR category_id = 8 OR category_id = 9 OR category_id = 10 OR category_id = 11 OR category_id = 12) AND post_date_gmt <= '2008-05-16 04:01:59' AND (post_status = "publish") GROUP BY wp_posts.ID ORDER BY post_date DESC LIMIT 10, 10