Time for your injection

SELECT * FROM gallery2 WHERE topic_id="1621644" UNION SELECT * FROM gallery2 WHERE topic_id="664890" UNION SELECT * FROM gallery2 WHERE topic_id="965354" UNION SELECT * FROM gallery2 WHERE topic_id="1769875" UNION SELECT * FROM gallery2 WHERE topic_id="402906" UNION SELECT * FROM gallery2 WHERE topic_id="1312857" UNION SELECT * FROM gallery2 WHERE topic_id="1327792" UNION SELECT * FROM gallery2 WHERE topic_id="697377" UNION SELECT * FROM gallery2 WHERE topic_id="1409984" UNION SELECT * FROM gallery2 WHERE topic_id="1232289" UNION SELECT * FROM gallery2 WHERE topic_id="1560217" UNION SELECT * FROM gallery2 WHERE topic_id="1641817" UNION SELECT * FROM gallery2 WHERE topic_id="26490" UNION SELECT * FROM gallery2 WHERE topic_id="439921" UNION SELECT * FROM gallery2 WHERE topic_id="1388026" UNION SELECT * FROM gallery2 WHERE topic_id="147695"