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