pendu epndu pnedu npedu enpdu nepdu pednu epdnu pdenu dpenu edpnu depnu pndeu npdeu pdneu dpneu ndpeu dnpeu endpu nedpu ednpu denpu ndepu dnepu penud epnud pneud npeud enpud nepud peund epund puend upend eupnd uepnd pnued npued puned upned nuped unped enupd neupd eunpd uenpd nuepd unepd pedun epdun pdeun dpeun edpun depun peudn epudn puedn upedn eupdn uepdn pduen dpuen puden upden dupen udpen edupn deupn eudpn uedpn duepn udepn pndue npdue pdnue dpnue ndpue dnpue pnude npude punde upnde nupde unpde pdune dpune pudne updne dupne udpne ndupe dnupe nudpe undpe dunpe udnpe endup nedup ednup denup ndeup dneup enudp neudp eundp uendp nuedp unedp edunp deunp eudnp uednp duenp udenp nduep dnuep nudep undep dunep udnep
Note: these 'words' (valid or invalid) are all the permutations of the word pendu. These words are obtained by scrambling the letters in pendu.