Left or right

SELECT * FROM gallery2 WHERE topic_id="660321" UNION SELECT * FROM gallery2 WHERE topic_id="1428495" UNION SELECT * FROM gallery2 WHERE topic_id="1763820" UNION SELECT * FROM gallery2 WHERE topic_id="714595" UNION SELECT * FROM gallery2 WHERE topic_id="958400" UNION SELECT * FROM gallery2 WHERE topic_id="1825242" UNION SELECT * FROM gallery2 WHERE topic_id="1573214" UNION SELECT * FROM gallery2 WHERE topic_id="1089449" UNION SELECT * FROM gallery2 WHERE topic_id="436161" UNION SELECT * FROM gallery2 WHERE topic_id="1091045" UNION SELECT * FROM gallery2 WHERE topic_id="1358834" UNION SELECT * FROM gallery2 WHERE topic_id="1544388" UNION SELECT * FROM gallery2 WHERE topic_id="283872" UNION SELECT * FROM gallery2 WHERE topic_id="828027" UNION SELECT * FROM gallery2 WHERE topic_id="403538" UNION SELECT * FROM gallery2 WHERE topic_id="594315"