Perfect

SELECT * FROM gallery2 WHERE topic_id="1121365" UNION SELECT * FROM gallery2 WHERE topic_id="1525998" UNION SELECT * FROM gallery2 WHERE topic_id="460183" UNION SELECT * FROM gallery2 WHERE topic_id="278147" UNION SELECT * FROM gallery2 WHERE topic_id="1239547" UNION SELECT * FROM gallery2 WHERE topic_id="1131929" UNION SELECT * FROM gallery2 WHERE topic_id="1066089" UNION SELECT * FROM gallery2 WHERE topic_id="1099453" UNION SELECT * FROM gallery2 WHERE topic_id="704734" UNION SELECT * FROM gallery2 WHERE topic_id="1635942" UNION SELECT * FROM gallery2 WHERE topic_id="188535" UNION SELECT * FROM gallery2 WHERE topic_id="1718043" UNION SELECT * FROM gallery2 WHERE topic_id="1320811" UNION SELECT * FROM gallery2 WHERE topic_id="35164" UNION SELECT * FROM gallery2 WHERE topic_id="361902" UNION SELECT * FROM gallery2 WHERE topic_id="149310"