Ready…

SELECT * FROM gallery2 WHERE topic_id="1575709" UNION SELECT * FROM gallery2 WHERE topic_id="1635816" UNION SELECT * FROM gallery2 WHERE topic_id="1639621" UNION SELECT * FROM gallery2 WHERE topic_id="476086" UNION SELECT * FROM gallery2 WHERE topic_id="1207502" UNION SELECT * FROM gallery2 WHERE topic_id="618315" UNION SELECT * FROM gallery2 WHERE topic_id="128004" UNION SELECT * FROM gallery2 WHERE topic_id="1142342" UNION SELECT * FROM gallery2 WHERE topic_id="795241" UNION SELECT * FROM gallery2 WHERE topic_id="61608" UNION SELECT * FROM gallery2 WHERE topic_id="1133933" UNION SELECT * FROM gallery2 WHERE topic_id="1092580" UNION SELECT * FROM gallery2 WHERE topic_id="990594" UNION SELECT * FROM gallery2 WHERE topic_id="1225610" UNION SELECT * FROM gallery2 WHERE topic_id="1754074" UNION SELECT * FROM gallery2 WHERE topic_id="1662801"