perned eprned prened rpened erpned repned penred epnred pnered npered enpred nepred prneed rpneed pnreed npreed rnpeed nrpeed ernped renped enrped nerped rneped nreped perend eprend preend rpeend erpend repend peernd epernd peernd epernd eeprnd eeprnd preend rpeend perend eprend repend erpend erepnd reepnd eerpnd eerpnd reepnd erepnd penerd epnerd pneerd npeerd enperd neperd peenrd epenrd peenrd epenrd eepnrd eepnrd pneerd npeerd penerd epnerd neperd enperd eneprd neeprd eenprd eenprd neeprd eneprd prneed rpneed pnreed npreed rnpeed nrpeed prened rpened perned eprned repned erpned pnered npered penred epnred nepred enpred rneped nreped renped ernped nerped enrped ernepd renepd enrepd nerepd rneepd nreepd erenpd reenpd eernpd eernpd reenpd erenpd enerpd neerpd eenrpd eenrpd neerpd enerpd rneepd nreepd renepd ernepd nerepd enrepd pernde eprnde prende rpende erpnde repnde penrde epnrde pnerde nperde enprde neprde prnede rpnede pnrede nprede rnpede nrpede ernpde renpde enrpde nerpde rnepde nrepde perdne eprdne predne rpedne erpdne repdne pedrne epdrne pderne dperne edprne deprne prdene rpdene pdrene dprene rdpene drpene erdpne redpne edrpne derpne rdepne drepne pendre epndre pnedre npedre enpdre nepdre pednre epdnre pdenre dpenre edpnre depnre pndere npdere pdnere dpnere ndpere dnpere endpre nedpre ednpre denpre ndepre dnepre prndee rpndee pnrdee nprdee rnpdee nrpdee prdnee rpdnee pdrnee dprnee rdpnee drpnee pndree npdree pdnree dpnree ndpree dnpree rndpee nrdpee rdnpee drnpee ndrpee dnrpee erndpe rendpe enrdpe nerdpe rnedpe nredpe erdnpe rednpe edrnpe dernpe rdenpe drenpe endrpe nedrpe ednrpe denrpe nderpe dnerpe rndepe nrdepe rdnepe drnepe ndrepe dnrepe peredn epredn preedn rpeedn erpedn repedn peerdn eperdn peerdn eperdn eeprdn eeprdn preedn rpeedn peredn epredn repedn erpedn erepdn reepdn eerpdn eerpdn reepdn erepdn perden eprden preden rpeden erpden repden pedren epdren pderen dperen edpren depren prdeen rpdeen pdreen dpreen rdpeen drpeen erdpen redpen edrpen derpen rdepen drepen peedrn epedrn peedrn epedrn eepdrn eepdrn pedern epdern pdeern dpeern edpern depern pedern epdern pdeern dpeern edpern depern eedprn eedprn edeprn deeprn edeprn deeprn preden rpeden perden eprden repden erpden prdeen rpdeen pdreen dpreen rdpeen drpeen pedren epdren pderen dperen edpren depren redpen erdpen rdepen drepen edrpen derpen eredpn reedpn eerdpn eerdpn reedpn eredpn erdepn redepn edrepn derepn rdeepn dreepn eedrpn eedrpn ederpn deerpn ederpn deerpn redepn erdepn rdeepn dreepn edrepn derepn penedr epnedr pneedr npeedr enpedr nepedr peendr ependr peendr ependr eepndr eepndr pneedr npeedr penedr epnedr nepedr enpedr enepdr neepdr eenpdr eenpdr neepdr enepdr pender epnder pneder npeder enpder nepder pedner epdner pdener dpener edpner depner pndeer npdeer pdneer dpneer ndpeer dnpeer endper nedper ednper denper ndeper dneper peednr epednr peednr epednr eepdnr eepdnr pedenr epdenr pdeenr dpeenr edpenr depenr pedenr epdenr pdeenr dpeenr edpenr depenr eedpnr eedpnr edepnr deepnr edepnr deepnr pneder npeder pender epnder nepder enpder pndeer npdeer pdneer dpneer ndpeer dnpeer pedner epdner pdener dpener edpner depner nedper endper ndeper dneper ednper denper enedpr needpr eendpr eendpr needpr enedpr endepr nedepr ednepr denepr ndeepr dneepr eednpr eednpr edenpr deenpr edenpr deenpr nedepr endepr ndeepr dneepr ednepr denepr prnede rpnede pnrede nprede rnpede nrpede prende rpende pernde eprnde repnde erpnde pnerde nperde penrde epnrde neprde enprde rnepde nrepde renpde ernpde nerpde enrpde prndee rpndee pnrdee nprdee rnpdee nrpdee prdnee rpdnee pdrnee dprnee rdpnee drpnee pndree npdree pdnree dpnree ndpree dnpree rndpee nrdpee rdnpee drnpee ndrpee dnrpee predne rpedne perdne eprdne repdne erpdne prdene rpdene pdrene dprene rdpene drpene pedrne epdrne pderne dperne edprne deprne redpne erdpne rdepne drepne edrpne derpne pnedre npedre pendre epndre nepdre enpdre pndere npdere pdnere dpnere ndpere dnpere pednre epdnre pdenre dpenre edpnre depnre nedpre endpre ndepre dnepre ednpre denpre rnedpe nredpe rendpe erndpe nerdpe enrdpe rndepe nrdepe rdnepe drnepe ndrepe dnrepe rednpe erdnpe rdenpe drenpe edrnpe dernpe nedrpe endrpe nderpe dnerpe ednrpe denrpe ernedp renedp enredp neredp rneedp nreedp erendp reendp eerndp eerndp reendp erendp enerdp neerdp eenrdp eenrdp neerdp enerdp rneedp nreedp renedp ernedp neredp enredp erndep rendep enrdep nerdep rnedep nredep erdnep rednep edrnep dernep rdenep drenep endrep nedrep ednrep denrep nderep dnerep rndeep nrdeep rdneep drneep ndreep dnreep erednp reednp eerdnp eerdnp reednp erednp erdenp redenp edrenp derenp rdeenp dreenp eedrnp eedrnp edernp deernp edernp deernp redenp erdenp rdeenp dreenp edrenp derenp enedrp needrp eendrp eendrp needrp enedrp enderp nederp ednerp denerp ndeerp dneerp eednrp eednrp edenrp deenrp edenrp deenrp nederp enderp ndeerp dneerp ednerp denerp rnedep nredep rendep erndep nerdep enrdep rndeep nrdeep rdneep drneep ndreep dnreep rednep erdnep rdenep drenep edrnep dernep nedrep endrep nderep dnerep ednrep denrep
Note: these 'words' (valid or invalid) are all the permutations of the word perned. These words are obtained by scrambling the letters in perned.