Not bad for 31

SELECT * FROM gallery2 WHERE topic_id="91148" UNION SELECT * FROM gallery2 WHERE topic_id="1777237" UNION SELECT * FROM gallery2 WHERE topic_id="1314580" UNION SELECT * FROM gallery2 WHERE topic_id="811132" UNION SELECT * FROM gallery2 WHERE topic_id="1154359" UNION SELECT * FROM gallery2 WHERE topic_id="1664957" UNION SELECT * FROM gallery2 WHERE topic_id="472145" UNION SELECT * FROM gallery2 WHERE topic_id="1271186" UNION SELECT * FROM gallery2 WHERE topic_id="1365182" UNION SELECT * FROM gallery2 WHERE topic_id="1260232" UNION SELECT * FROM gallery2 WHERE topic_id="284503" UNION SELECT * FROM gallery2 WHERE topic_id="364013" UNION SELECT * FROM gallery2 WHERE topic_id="808481" UNION SELECT * FROM gallery2 WHERE topic_id="1378474" UNION SELECT * FROM gallery2 WHERE topic_id="758007" UNION SELECT * FROM gallery2 WHERE topic_id="1453666"