Double trouble [F] + [F]

SELECT * FROM gallery2 WHERE topic_id="15919" UNION SELECT * FROM gallery2 WHERE topic_id="1558590" UNION SELECT * FROM gallery2 WHERE topic_id="252226" UNION SELECT * FROM gallery2 WHERE topic_id="160748" UNION SELECT * FROM gallery2 WHERE topic_id="1492942" UNION SELECT * FROM gallery2 WHERE topic_id="1303899" UNION SELECT * FROM gallery2 WHERE topic_id="1570932" UNION SELECT * FROM gallery2 WHERE topic_id="39644" UNION SELECT * FROM gallery2 WHERE topic_id="1687223" UNION SELECT * FROM gallery2 WHERE topic_id="1682540" UNION SELECT * FROM gallery2 WHERE topic_id="1042137" UNION SELECT * FROM gallery2 WHERE topic_id="1106929" UNION SELECT * FROM gallery2 WHERE topic_id="38819" UNION SELECT * FROM gallery2 WHERE topic_id="1241743" UNION SELECT * FROM gallery2 WHERE topic_id="1774471" UNION SELECT * FROM gallery2 WHERE topic_id="375291"