Perfect

SELECT * FROM gallery2 WHERE topic_id="656571" UNION SELECT * FROM gallery2 WHERE topic_id="1693756" UNION SELECT * FROM gallery2 WHERE topic_id="926892" UNION SELECT * FROM gallery2 WHERE topic_id="74885" UNION SELECT * FROM gallery2 WHERE topic_id="1681373" UNION SELECT * FROM gallery2 WHERE topic_id="45941" UNION SELECT * FROM gallery2 WHERE topic_id="1437502" UNION SELECT * FROM gallery2 WHERE topic_id="1255392" UNION SELECT * FROM gallery2 WHERE topic_id="1091266" UNION SELECT * FROM gallery2 WHERE topic_id="1277974" UNION SELECT * FROM gallery2 WHERE topic_id="1107893" UNION SELECT * FROM gallery2 WHERE topic_id="1274210" UNION SELECT * FROM gallery2 WHERE topic_id="751465" UNION SELECT * FROM gallery2 WHERE topic_id="20310" UNION SELECT * FROM gallery2 WHERE topic_id="530704" UNION SELECT * FROM gallery2 WHERE topic_id="523413"