Covered 😉

SELECT * FROM gallery2 WHERE topic_id="21386" UNION SELECT * FROM gallery2 WHERE topic_id="397862" UNION SELECT * FROM gallery2 WHERE topic_id="514279" UNION SELECT * FROM gallery2 WHERE topic_id="364645" UNION SELECT * FROM gallery2 WHERE topic_id="754641" UNION SELECT * FROM gallery2 WHERE topic_id="1494215" UNION SELECT * FROM gallery2 WHERE topic_id="341208" UNION SELECT * FROM gallery2 WHERE topic_id="907979" UNION SELECT * FROM gallery2 WHERE topic_id="1113804" UNION SELECT * FROM gallery2 WHERE topic_id="47523" UNION SELECT * FROM gallery2 WHERE topic_id="1339179" UNION SELECT * FROM gallery2 WHERE topic_id="217427" UNION SELECT * FROM gallery2 WHERE topic_id="50816" UNION SELECT * FROM gallery2 WHERE topic_id="17722" UNION SELECT * FROM gallery2 WHERE topic_id="1348159" UNION SELECT * FROM gallery2 WHERE topic_id="1418672"