Ladder

SELECT * FROM gallery2 WHERE topic_id="1578303" UNION SELECT * FROM gallery2 WHERE topic_id="1432661" UNION SELECT * FROM gallery2 WHERE topic_id="1531535" UNION SELECT * FROM gallery2 WHERE topic_id="1057063" UNION SELECT * FROM gallery2 WHERE topic_id="1753691" UNION SELECT * FROM gallery2 WHERE topic_id="582046" UNION SELECT * FROM gallery2 WHERE topic_id="1816786" UNION SELECT * FROM gallery2 WHERE topic_id="890718" UNION SELECT * FROM gallery2 WHERE topic_id="1514758" UNION SELECT * FROM gallery2 WHERE topic_id="1691290" UNION SELECT * FROM gallery2 WHERE topic_id="1332812" UNION SELECT * FROM gallery2 WHERE topic_id="171679" UNION SELECT * FROM gallery2 WHERE topic_id="1060135" UNION SELECT * FROM gallery2 WHERE topic_id="609259" UNION SELECT * FROM gallery2 WHERE topic_id="1189601" UNION SELECT * FROM gallery2 WHERE topic_id="490721"