Trying self

SELECT * FROM gallery2 WHERE topic_id="1616536" UNION SELECT * FROM gallery2 WHERE topic_id="303119" UNION SELECT * FROM gallery2 WHERE topic_id="106384" UNION SELECT * FROM gallery2 WHERE topic_id="879582" UNION SELECT * FROM gallery2 WHERE topic_id="1205986" UNION SELECT * FROM gallery2 WHERE topic_id="996146" UNION SELECT * FROM gallery2 WHERE topic_id="1821065" UNION SELECT * FROM gallery2 WHERE topic_id="424895" UNION SELECT * FROM gallery2 WHERE topic_id="487738" UNION SELECT * FROM gallery2 WHERE topic_id="1462469" UNION SELECT * FROM gallery2 WHERE topic_id="881734" UNION SELECT * FROM gallery2 WHERE topic_id="357237" UNION SELECT * FROM gallery2 WHERE topic_id="1444942" UNION SELECT * FROM gallery2 WHERE topic_id="344208" UNION SELECT * FROM gallery2 WHERE topic_id="675417" UNION SELECT * FROM gallery2 WHERE topic_id="1500407"