perfect position

SELECT * FROM gallery2 WHERE topic_id="340883" UNION SELECT * FROM gallery2 WHERE topic_id="1148710" UNION SELECT * FROM gallery2 WHERE topic_id="1007414" UNION SELECT * FROM gallery2 WHERE topic_id="396062" UNION SELECT * FROM gallery2 WHERE topic_id="358566" UNION SELECT * FROM gallery2 WHERE topic_id="1616720" UNION SELECT * FROM gallery2 WHERE topic_id="983621" UNION SELECT * FROM gallery2 WHERE topic_id="530169" UNION SELECT * FROM gallery2 WHERE topic_id="284650" UNION SELECT * FROM gallery2 WHERE topic_id="1634335" UNION SELECT * FROM gallery2 WHERE topic_id="1241237" UNION SELECT * FROM gallery2 WHERE topic_id="668727" UNION SELECT * FROM gallery2 WHERE topic_id="1520738" UNION SELECT * FROM gallery2 WHERE topic_id="1575550" UNION SELECT * FROM gallery2 WHERE topic_id="937861" UNION SELECT * FROM gallery2 WHERE topic_id="807072"