orpin ropin oprin porin rpoin proin oripn roipn oirpn iorpn riopn iropn opirn poirn oiprn ioprn piorn iporn rpion prion ripon irpon piron ipron orpni ropni oprni porni rponi proni ornpi ronpi onrpi norpi rnopi nropi opnri ponri onpri nopri pnori npori rpnoi prnoi rnpoi nrpoi pnroi nproi orinp roinp oirnp iornp rionp ironp ornip ronip onrip norip rnoip nroip oinrp ionrp onirp noirp inorp niorp rinop irnop rniop nriop inrop nirop opinr poinr oipnr iopnr pionr iponr opnir ponir onpir nopir pnoir npoir oinpr ionpr onipr noipr inopr niopr pinor ipnor pnior npior inpor nipor rpino prino ripno irpno pirno iprno rpnio prnio rnpio nrpio pnrio nprio rinpo irnpo rnipo nripo inrpo nirpo pinro ipnro pniro npiro inpro nipro
Note: these 'words' (valid or invalid) are all the permutations of the word orpin. These words are obtained by scrambling the letters in orpin.