negro engro ngero gnero egnro genro nergo enrgo nrego rnego erngo rengo ngreo gnreo nrgeo rngeo grneo rgneo egrno gerno ergno regno greno rgeno negor engor ngeor gneor egnor genor neogr enogr noegr onegr eongr oengr ngoer gnoer noger onger goner ogner egonr geonr eognr oegnr goenr ogenr nerog enrog nreog rneog ernog renog neorg enorg noerg onerg eonrg oenrg nroeg rnoeg noreg onreg roneg orneg erong reong eorng oerng roeng oreng ngroe gnroe nrgoe rngoe grnoe rgnoe ngore gnore nogre ongre gonre ognre nroge rnoge norge onrge ronge ornge grone rgone gorne ogrne rogne orgne egron geron ergon regon greon rgeon egorn georn eogrn oegrn goern ogern erogn reogn eorgn oergn roegn oregn groen rgoen goren ogren rogen orgen
Note: these 'words' (valid or invalid) are all the permutations of the word negro. These words are obtained by scrambling the letters in negro.