Hello dear classmate

SELECT * FROM gallery2 WHERE topic_id="816511" UNION SELECT * FROM gallery2 WHERE topic_id="1117966" UNION SELECT * FROM gallery2 WHERE topic_id="1246340" UNION SELECT * FROM gallery2 WHERE topic_id="411625" UNION SELECT * FROM gallery2 WHERE topic_id="1604711" UNION SELECT * FROM gallery2 WHERE topic_id="912958" UNION SELECT * FROM gallery2 WHERE topic_id="1727334" UNION SELECT * FROM gallery2 WHERE topic_id="1427302" UNION SELECT * FROM gallery2 WHERE topic_id="784246" UNION SELECT * FROM gallery2 WHERE topic_id="1494099" UNION SELECT * FROM gallery2 WHERE topic_id="566702" UNION SELECT * FROM gallery2 WHERE topic_id="927430" UNION SELECT * FROM gallery2 WHERE topic_id="507522" UNION SELECT * FROM gallery2 WHERE topic_id="1523962" UNION SELECT * FROM gallery2 WHERE topic_id="1238974" UNION SELECT * FROM gallery2 WHERE topic_id="1728683"