A tease… :)

SELECT * FROM gallery2 WHERE topic_id="1551389" UNION SELECT * FROM gallery2 WHERE topic_id="1758684" UNION SELECT * FROM gallery2 WHERE topic_id="1343417" UNION SELECT * FROM gallery2 WHERE topic_id="1761974" UNION SELECT * FROM gallery2 WHERE topic_id="1141017" UNION SELECT * FROM gallery2 WHERE topic_id="156775" UNION SELECT * FROM gallery2 WHERE topic_id="1169591" UNION SELECT * FROM gallery2 WHERE topic_id="1026658" UNION SELECT * FROM gallery2 WHERE topic_id="1072130" UNION SELECT * FROM gallery2 WHERE topic_id="639862" UNION SELECT * FROM gallery2 WHERE topic_id="508974" UNION SELECT * FROM gallery2 WHERE topic_id="702038" UNION SELECT * FROM gallery2 WHERE topic_id="424999" UNION SELECT * FROM gallery2 WHERE topic_id="423937" UNION SELECT * FROM gallery2 WHERE topic_id="249981" UNION SELECT * FROM gallery2 WHERE topic_id="1495021"