Where do you start

SELECT * FROM gallery2 WHERE topic_id="218161" UNION SELECT * FROM gallery2 WHERE topic_id="453798" UNION SELECT * FROM gallery2 WHERE topic_id="556789" UNION SELECT * FROM gallery2 WHERE topic_id="1300339" UNION SELECT * FROM gallery2 WHERE topic_id="304993" UNION SELECT * FROM gallery2 WHERE topic_id="241909" UNION SELECT * FROM gallery2 WHERE topic_id="1442345" UNION SELECT * FROM gallery2 WHERE topic_id="1052311" UNION SELECT * FROM gallery2 WHERE topic_id="293945" UNION SELECT * FROM gallery2 WHERE topic_id="1053243" UNION SELECT * FROM gallery2 WHERE topic_id="321726" UNION SELECT * FROM gallery2 WHERE topic_id="1205015" UNION SELECT * FROM gallery2 WHERE topic_id="1782918" UNION SELECT * FROM gallery2 WHERE topic_id="230943" UNION SELECT * FROM gallery2 WHERE topic_id="799706" UNION SELECT * FROM gallery2 WHERE topic_id="619877"