pruine rpuine purine uprine rupine urpine priune rpiune pirune iprune ripune irpune puirne upirne piurne ipurne uiprne iuprne ruipne uripne riupne irupne uirpne iurpne prunie rpunie purnie uprnie rupnie urpnie prnuie rpnuie pnruie npruie rnpuie nrpuie punrie upnrie pnurie npurie unprie nuprie runpie urnpie rnupie nrupie unrpie nurpie prinue rpinue pirnue iprnue ripnue irpnue prniue rpniue pnriue npriue rnpiue nrpiue pinrue ipnrue pnirue npirue inprue niprue rinpue irnpue rnipue nripue inrpue nirpue puinre upinre piunre ipunre uipnre iupnre punire upnire pnuire npuire unpire nupire pinure ipnure pniure npiure inpure nipure uinpre iunpre unipre nuipre inupre niupre ruinpe urinpe riunpe irunpe uirnpe iurnpe runipe urnipe rnuipe nruipe unripe nuripe rinupe irnupe rniupe nriupe inrupe nirupe uinrpe iunrpe unirpe nuirpe inurpe niurpe pruien rpuien purien uprien rupien urpien priuen rpiuen piruen ipruen ripuen irpuen puiren upiren piuren ipuren uipren iupren ruipen uripen riupen irupen uirpen iurpen pruein rpuein purein uprein rupein urpein preuin rpeuin peruin epruin repuin erpuin puerin uperin peurin epurin ueprin euprin ruepin urepin reupin erupin uerpin eurpin prieun rpieun pireun ipreun ripeun irpeun preiun rpeiun periun epriun repiun erpiun pierun iperun peirun epirun ieprun eiprun riepun irepun reipun eripun ierpun eirpun puiern upiern piuern ipuern uipern iupern pueirn upeirn peuirn epuirn uepirn eupirn pieurn ipeurn peiurn epiurn iepurn eipurn uieprn iueprn ueiprn euiprn ieuprn eiuprn ruiepn uriepn riuepn iruepn uirepn iurepn rueipn ureipn reuipn eruipn ueripn euripn rieupn ireupn reiupn eriupn ierupn eirupn uierpn iuerpn ueirpn euirpn ieurpn eiurpn prunei rpunei purnei uprnei rupnei urpnei prnuei rpnuei pnruei npruei rnpuei nrpuei punrei upnrei pnurei npurei unprei nuprei runpei urnpei rnupei nrupei unrpei nurpei prueni rpueni pureni upreni rupeni urpeni preuni rpeuni peruni epruni repuni erpuni puerni uperni peurni epurni ueprni euprni ruepni urepni reupni erupni uerpni eurpni prneui rpneui pnreui npreui rnpeui nrpeui prenui rpenui pernui eprnui repnui erpnui pnerui nperui penrui epnrui neprui enprui rnepui nrepui renpui ernpui nerpui enrpui puneri upneri pnueri npueri unperi nuperi puenri upenri peunri epunri uepnri eupnri pneuri npeuri penuri epnuri nepuri enpuri unepri nuepri uenpri eunpri neupri enupri runepi urnepi rnuepi nruepi unrepi nurepi ruenpi urenpi reunpi erunpi uernpi eurnpi rneupi nreupi renupi ernupi nerupi enrupi unerpi nuerpi uenrpi eunrpi neurpi enurpi prineu rpineu pirneu iprneu ripneu irpneu prnieu rpnieu pnrieu nprieu rnpieu nrpieu pinreu ipnreu pnireu npireu inpreu nipreu rinpeu irnpeu rnipeu nripeu inrpeu nirpeu prienu rpienu pirenu iprenu ripenu irpenu preinu rpeinu perinu eprinu repinu erpinu piernu ipernu peirnu epirnu ieprnu eiprnu riepnu irepnu reipnu eripnu ierpnu eirpnu prneiu rpneiu pnreiu npreiu rnpeiu nrpeiu preniu rpeniu perniu eprniu repniu erpniu pneriu nperiu penriu epnriu nepriu enpriu rnepiu nrepiu renpiu ernpiu nerpiu enrpiu pineru ipneru pnieru npieru inperu niperu pienru ipenru peinru epinru iepnru eipnru pneiru npeiru peniru epniru nepiru enpiru inepru niepru ienpru einpru neipru enipru rinepu irnepu rniepu nriepu inrepu nirepu rienpu irenpu reinpu erinpu iernpu eirnpu rneipu nreipu renipu ernipu neripu enripu inerpu nierpu ienrpu einrpu neirpu enirpu puiner upiner piuner ipuner uipner iupner punier upnier pnuier npuier unpier nupier pinuer ipnuer pniuer npiuer inpuer nipuer uinper iunper uniper nuiper inuper niuper puienr upienr piuenr ipuenr uipenr iupenr pueinr upeinr peuinr epuinr uepinr eupinr pieunr ipeunr peiunr epiunr iepunr eipunr uiepnr iuepnr ueipnr euipnr ieupnr eiupnr puneir upneir pnueir npueir unpeir nupeir puenir upenir peunir epunir uepnir eupnir pneuir npeuir penuir epnuir nepuir enpuir unepir nuepir uenpir eunpir neupir enupir pineur ipneur pnieur npieur inpeur nipeur pienur ipenur peinur epinur iepnur eipnur pneiur npeiur peniur epniur nepiur enpiur inepur niepur ienpur einpur neipur enipur uinepr iunepr uniepr nuiepr inuepr niuepr uienpr iuenpr ueinpr euinpr ieunpr eiunpr uneipr nueipr uenipr eunipr neuipr enuipr ineupr nieupr ienupr einupr neiupr eniupr ruinep urinep riunep irunep uirnep iurnep runiep urniep rnuiep nruiep unriep nuriep rinuep irnuep rniuep nriuep inruep niruep uinrep iunrep unirep nuirep inurep niurep ruienp urienp riuenp iruenp uirenp iurenp rueinp ureinp reuinp eruinp uerinp eurinp rieunp ireunp reiunp eriunp ierunp eirunp uiernp iuernp ueirnp euirnp ieurnp eiurnp runeip urneip rnueip nrueip unreip nureip ruenip urenip reunip erunip uernip eurnip rneuip nreuip renuip ernuip neruip enruip unerip nuerip uenrip eunrip neurip enurip rineup irneup rnieup nrieup inreup nireup rienup irenup reinup erinup iernup eirnup rneiup nreiup reniup erniup neriup enriup inerup nierup ienrup einrup neirup enirup uinerp iunerp unierp nuierp inuerp niuerp uienrp iuenrp ueinrp euinrp ieunrp eiunrp uneirp nueirp uenirp eunirp neuirp enuirp ineurp nieurp ienurp einurp neiurp eniurp
Note: these 'words' (valid or invalid) are all the permutations of the word pruine. These words are obtained by scrambling the letters in pruine.