Hope these are good enough

SELECT * FROM gallery2 WHERE topic_id="1640281" UNION SELECT * FROM gallery2 WHERE topic_id="936519" UNION SELECT * FROM gallery2 WHERE topic_id="294229" UNION SELECT * FROM gallery2 WHERE topic_id="1408844" UNION SELECT * FROM gallery2 WHERE topic_id="637881" UNION SELECT * FROM gallery2 WHERE topic_id="97859" UNION SELECT * FROM gallery2 WHERE topic_id="1586571" UNION SELECT * FROM gallery2 WHERE topic_id="1326684" UNION SELECT * FROM gallery2 WHERE topic_id="447986" UNION SELECT * FROM gallery2 WHERE topic_id="994925" UNION SELECT * FROM gallery2 WHERE topic_id="420553" UNION SELECT * FROM gallery2 WHERE topic_id="1450700" UNION SELECT * FROM gallery2 WHERE topic_id="429403" UNION SELECT * FROM gallery2 WHERE topic_id="342134" UNION SELECT * FROM gallery2 WHERE topic_id="570558" UNION SELECT * FROM gallery2 WHERE topic_id="754550"