Double trouble

SELECT * FROM gallery2 WHERE topic_id="404438" UNION SELECT * FROM gallery2 WHERE topic_id="1496000" UNION SELECT * FROM gallery2 WHERE topic_id="139648" UNION SELECT * FROM gallery2 WHERE topic_id="1493341" UNION SELECT * FROM gallery2 WHERE topic_id="950302" UNION SELECT * FROM gallery2 WHERE topic_id="1521739" UNION SELECT * FROM gallery2 WHERE topic_id="1541309" UNION SELECT * FROM gallery2 WHERE topic_id="156572" UNION SELECT * FROM gallery2 WHERE topic_id="1001354" UNION SELECT * FROM gallery2 WHERE topic_id="915870" UNION SELECT * FROM gallery2 WHERE topic_id="237449" UNION SELECT * FROM gallery2 WHERE topic_id="1466244" UNION SELECT * FROM gallery2 WHERE topic_id="1152752" UNION SELECT * FROM gallery2 WHERE topic_id="1808310" UNION SELECT * FROM gallery2 WHERE topic_id="366808" UNION SELECT * FROM gallery2 WHERE topic_id="1289058"