ebrdi berdi erbdi rebdi bredi rbedi ebdri bedri edbri debri bderi dberi erdbi redbi edrbi derbi rdebi drebi brdei rbdei bdrei dbrei rdbei drbei ebrid berid erbid rebid breid rbeid ebird beird eibrd iebrd bierd iberd eribd reibd eirbd ierbd riebd irebd bried rbied bired ibred ribed irbed ebdir bedir edbir debir bdeir dbeir ebidr beidr eibdr iebdr biedr ibedr edibr deibr eidbr iedbr diebr idebr bdier dbier bider ibder diber idber erdib redib edrib derib rdeib dreib eridb reidb eirdb ierdb riedb iredb edirb deirb eidrb iedrb dierb iderb rdieb drieb rideb irdeb direb idreb brdie rbdie bdrie dbrie rdbie drbie bride rbide birde ibrde ribde irbde bdire dbire bidre ibdre dibre idbre rdibe dribe ridbe irdbe dirbe idrbe
Note: these 'words' (valid or invalid) are all the permutations of the word ebrdi. These words are obtained by scrambling the letters in ebrdi.