fill me up from behind

SELECT * FROM gallery2 WHERE topic_id="1715911" UNION SELECT * FROM gallery2 WHERE topic_id="788833" UNION SELECT * FROM gallery2 WHERE topic_id="52970" UNION SELECT * FROM gallery2 WHERE topic_id="462337" UNION SELECT * FROM gallery2 WHERE topic_id="1000820" UNION SELECT * FROM gallery2 WHERE topic_id="903766" UNION SELECT * FROM gallery2 WHERE topic_id="905613" UNION SELECT * FROM gallery2 WHERE topic_id="871696" UNION SELECT * FROM gallery2 WHERE topic_id="392861" UNION SELECT * FROM gallery2 WHERE topic_id="724780" UNION SELECT * FROM gallery2 WHERE topic_id="1764824" UNION SELECT * FROM gallery2 WHERE topic_id="1755805" UNION SELECT * FROM gallery2 WHERE topic_id="993498" UNION SELECT * FROM gallery2 WHERE topic_id="1817626" UNION SELECT * FROM gallery2 WHERE topic_id="1463836" UNION SELECT * FROM gallery2 WHERE topic_id="1149991"