Absolute sort

SELECT * FROM gallery2 WHERE topic_id="706940" UNION SELECT * FROM gallery2 WHERE topic_id="1732355" UNION SELECT * FROM gallery2 WHERE topic_id="1333229" UNION SELECT * FROM gallery2 WHERE topic_id="1185717" UNION SELECT * FROM gallery2 WHERE topic_id="1236701" UNION SELECT * FROM gallery2 WHERE topic_id="1660779" UNION SELECT * FROM gallery2 WHERE topic_id="329127" UNION SELECT * FROM gallery2 WHERE topic_id="1447380" UNION SELECT * FROM gallery2 WHERE topic_id="1015996" UNION SELECT * FROM gallery2 WHERE topic_id="1595958" UNION SELECT * FROM gallery2 WHERE topic_id="460959" UNION SELECT * FROM gallery2 WHERE topic_id="1428468" UNION SELECT * FROM gallery2 WHERE topic_id="107420" UNION SELECT * FROM gallery2 WHERE topic_id="159109" UNION SELECT * FROM gallery2 WHERE topic_id="1458075" UNION SELECT * FROM gallery2 WHERE topic_id="1333203"