Enjoy

SELECT * FROM gallery2 WHERE topic_id="204815" UNION SELECT * FROM gallery2 WHERE topic_id="149965" UNION SELECT * FROM gallery2 WHERE topic_id="1464914" UNION SELECT * FROM gallery2 WHERE topic_id="1667558" UNION SELECT * FROM gallery2 WHERE topic_id="710739" UNION SELECT * FROM gallery2 WHERE topic_id="288531" UNION SELECT * FROM gallery2 WHERE topic_id="1643537" UNION SELECT * FROM gallery2 WHERE topic_id="1656774" UNION SELECT * FROM gallery2 WHERE topic_id="916386" UNION SELECT * FROM gallery2 WHERE topic_id="890724" UNION SELECT * FROM gallery2 WHERE topic_id="1146720" UNION SELECT * FROM gallery2 WHERE topic_id="191095" UNION SELECT * FROM gallery2 WHERE topic_id="1171026" UNION SELECT * FROM gallery2 WHERE topic_id="1220487" UNION SELECT * FROM gallery2 WHERE topic_id="1022578" UNION SELECT * FROM gallery2 WHERE topic_id="563871"