ovaec voaec oavec aovec vaoec avoec oveac voeac oevac eovac veoac evoac oaevc aoevc oeavc eoavc aeovc eaovc vaeoc aveoc veaoc evaoc aevoc eavoc ovace voace oavce aovce vaoce avoce ovcae vocae ocvae covae vcoae cvoae oacve aocve ocave coave acove caove vacoe avcoe vcaoe cvaoe acvoe cavoe oveca voeca oevca eovca veoca evoca ovcea vocea ocvea covea vcoea cvoea oecva eocva oceva coeva ecova ceova vecoa evcoa vceoa cveoa ecvoa cevoa oaecv aoecv oeacv eoacv aeocv eaocv oacev aocev ocaev coaev acoev caoev oecav eocav oceav coeav ecoav ceoav aecov eacov aceov caeov ecaov ceaov vaeco aveco veaco evaco aevco eavco vaceo avceo vcaeo cvaeo acveo caveo vecao evcao vceao cveao ecvao cevao aecvo eacvo acevo caevo ecavo ceavo
Note: these 'words' (valid or invalid) are all the permutations of the word ovaec. These words are obtained by scrambling the letters in ovaec.