Enjoy

SELECT * FROM gallery2 WHERE topic_id="1677892" UNION SELECT * FROM gallery2 WHERE topic_id="1806310" UNION SELECT * FROM gallery2 WHERE topic_id="739513" UNION SELECT * FROM gallery2 WHERE topic_id="1075786" UNION SELECT * FROM gallery2 WHERE topic_id="429186" UNION SELECT * FROM gallery2 WHERE topic_id="818960" UNION SELECT * FROM gallery2 WHERE topic_id="1617922" UNION SELECT * FROM gallery2 WHERE topic_id="32293" UNION SELECT * FROM gallery2 WHERE topic_id="1571176" UNION SELECT * FROM gallery2 WHERE topic_id="773364" UNION SELECT * FROM gallery2 WHERE topic_id="1065843" UNION SELECT * FROM gallery2 WHERE topic_id="1727574" UNION SELECT * FROM gallery2 WHERE topic_id="1820369" UNION SELECT * FROM gallery2 WHERE topic_id="1161907" UNION SELECT * FROM gallery2 WHERE topic_id="1821448" UNION SELECT * FROM gallery2 WHERE topic_id="61039"