USE THEM

SELECT * FROM gallery2 WHERE topic_id="1161906" UNION SELECT * FROM gallery2 WHERE topic_id="1709503" UNION SELECT * FROM gallery2 WHERE topic_id="1807129" UNION SELECT * FROM gallery2 WHERE topic_id="1502188" UNION SELECT * FROM gallery2 WHERE topic_id="1048869" UNION SELECT * FROM gallery2 WHERE topic_id="960801" UNION SELECT * FROM gallery2 WHERE topic_id="1566092" UNION SELECT * FROM gallery2 WHERE topic_id="1163136" UNION SELECT * FROM gallery2 WHERE topic_id="418007" UNION SELECT * FROM gallery2 WHERE topic_id="1088842" UNION SELECT * FROM gallery2 WHERE topic_id="1512535" UNION SELECT * FROM gallery2 WHERE topic_id="461659" UNION SELECT * FROM gallery2 WHERE topic_id="1496308" UNION SELECT * FROM gallery2 WHERE topic_id="1520519" UNION SELECT * FROM gallery2 WHERE topic_id="627148" UNION SELECT * FROM gallery2 WHERE topic_id="1781956"