The tree looks nice

SELECT * FROM gallery2 WHERE topic_id="125995" UNION SELECT * FROM gallery2 WHERE topic_id="1291785" UNION SELECT * FROM gallery2 WHERE topic_id="1047814" UNION SELECT * FROM gallery2 WHERE topic_id="461815" UNION SELECT * FROM gallery2 WHERE topic_id="1296881" UNION SELECT * FROM gallery2 WHERE topic_id="674793" UNION SELECT * FROM gallery2 WHERE topic_id="213557" UNION SELECT * FROM gallery2 WHERE topic_id="1222500" UNION SELECT * FROM gallery2 WHERE topic_id="403095" UNION SELECT * FROM gallery2 WHERE topic_id="469102" UNION SELECT * FROM gallery2 WHERE topic_id="179243" UNION SELECT * FROM gallery2 WHERE topic_id="416228" UNION SELECT * FROM gallery2 WHERE topic_id="909967" UNION SELECT * FROM gallery2 WHERE topic_id="870478" UNION SELECT * FROM gallery2 WHERE topic_id="153204" UNION SELECT * FROM gallery2 WHERE topic_id="1370862"