Not bad for 31

SELECT * FROM gallery2 WHERE topic_id="167250" UNION SELECT * FROM gallery2 WHERE topic_id="1176114" UNION SELECT * FROM gallery2 WHERE topic_id="1466492" UNION SELECT * FROM gallery2 WHERE topic_id="1106752" UNION SELECT * FROM gallery2 WHERE topic_id="1255235" UNION SELECT * FROM gallery2 WHERE topic_id="1820186" UNION SELECT * FROM gallery2 WHERE topic_id="150179" UNION SELECT * FROM gallery2 WHERE topic_id="1719829" UNION SELECT * FROM gallery2 WHERE topic_id="210678" UNION SELECT * FROM gallery2 WHERE topic_id="914560" UNION SELECT * FROM gallery2 WHERE topic_id="167951" UNION SELECT * FROM gallery2 WHERE topic_id="456809" UNION SELECT * FROM gallery2 WHERE topic_id="189238" UNION SELECT * FROM gallery2 WHERE topic_id="907166" UNION SELECT * FROM gallery2 WHERE topic_id="1147445" UNION SELECT * FROM gallery2 WHERE topic_id="1068922"