You can squeeze them if you'd like

SELECT * FROM gallery2 WHERE topic_id="344406" UNION SELECT * FROM gallery2 WHERE topic_id="888778" UNION SELECT * FROM gallery2 WHERE topic_id="1333727" UNION SELECT * FROM gallery2 WHERE topic_id="1104142" UNION SELECT * FROM gallery2 WHERE topic_id="1246299" UNION SELECT * FROM gallery2 WHERE topic_id="940963" UNION SELECT * FROM gallery2 WHERE topic_id="284462" UNION SELECT * FROM gallery2 WHERE topic_id="992780" UNION SELECT * FROM gallery2 WHERE topic_id="702330" UNION SELECT * FROM gallery2 WHERE topic_id="1091171" UNION SELECT * FROM gallery2 WHERE topic_id="671281" UNION SELECT * FROM gallery2 WHERE topic_id="963735" UNION SELECT * FROM gallery2 WHERE topic_id="339519" UNION SELECT * FROM gallery2 WHERE topic_id="126946" UNION SELECT * FROM gallery2 WHERE topic_id="609969" UNION SELECT * FROM gallery2 WHERE topic_id="159030"