Triangles

SELECT * FROM gallery2 WHERE topic_id="1784252" UNION SELECT * FROM gallery2 WHERE topic_id="1747782" UNION SELECT * FROM gallery2 WHERE topic_id="46006" UNION SELECT * FROM gallery2 WHERE topic_id="1387090" UNION SELECT * FROM gallery2 WHERE topic_id="1266787" UNION SELECT * FROM gallery2 WHERE topic_id="17429" UNION SELECT * FROM gallery2 WHERE topic_id="66518" UNION SELECT * FROM gallery2 WHERE topic_id="587102" UNION SELECT * FROM gallery2 WHERE topic_id="267017" UNION SELECT * FROM gallery2 WHERE topic_id="738396" UNION SELECT * FROM gallery2 WHERE topic_id="1014360" UNION SELECT * FROM gallery2 WHERE topic_id="381167" UNION SELECT * FROM gallery2 WHERE topic_id="1500950" UNION SELECT * FROM gallery2 WHERE topic_id="1736165" UNION SELECT * FROM gallery2 WHERE topic_id="1075345" UNION SELECT * FROM gallery2 WHERE topic_id="442912"