Reverse chikan

SELECT * FROM gallery2 WHERE topic_id="1272227" UNION SELECT * FROM gallery2 WHERE topic_id="1671901" UNION SELECT * FROM gallery2 WHERE topic_id="453815" UNION SELECT * FROM gallery2 WHERE topic_id="812749" UNION SELECT * FROM gallery2 WHERE topic_id="1020826" UNION SELECT * FROM gallery2 WHERE topic_id="311978" UNION SELECT * FROM gallery2 WHERE topic_id="1330627" UNION SELECT * FROM gallery2 WHERE topic_id="953493" UNION SELECT * FROM gallery2 WHERE topic_id="462210" UNION SELECT * FROM gallery2 WHERE topic_id="945112" UNION SELECT * FROM gallery2 WHERE topic_id="1591034" UNION SELECT * FROM gallery2 WHERE topic_id="247524" UNION SELECT * FROM gallery2 WHERE topic_id="611673" UNION SELECT * FROM gallery2 WHERE topic_id="638185" UNION SELECT * FROM gallery2 WHERE topic_id="897484" UNION SELECT * FROM gallery2 WHERE topic_id="320416"