unrips nurips urnips runips nruips rnuips unirps nuirps uinrps iunrps niurps inurps urinps ruinps uirnps iurnps riunps irunps nriups rniups nirups inrups rinups irnups unrpis nurpis urnpis runpis nrupis rnupis unpris nupris upnris punris npuris pnuris urpnis rupnis uprnis purnis rpunis prunis nrpuis rnpuis npruis pnruis rpnuis prnuis uniprs nuiprs uinprs iunprs niuprs inuprs unpirs nupirs upnirs punirs npuirs pnuirs uipnrs iupnrs upinrs puinrs ipunrs piunrs nipurs inpurs npiurs pniurs ipnurs pinurs uripns ruipns uirpns iurpns riupns irupns urpins rupins uprins purins rpuins pruins uiprns iuprns upirns puirns ipurns piurns ripuns irpuns rpiuns priuns ipruns piruns nripus rnipus nirpus inrpus rinpus irnpus nrpius rnpius nprius pnrius rpnius prnius niprus inprus npirus pnirus ipnrus pinrus ripnus irpnus rpinus prinus iprnus pirnus unrisp nurisp urnisp runisp nruisp rnuisp unirsp nuirsp uinrsp iunrsp niursp inursp urinsp ruinsp uirnsp iurnsp riunsp irunsp nriusp rniusp nirusp inrusp rinusp irnusp unrsip nursip urnsip runsip nrusip rnusip unsrip nusrip usnrip sunrip nsurip snurip ursnip rusnip usrnip surnip rsunip srunip nrsuip rnsuip nsruip snruip rsnuip srnuip unisrp nuisrp uinsrp iunsrp niusrp inusrp unsirp nusirp usnirp sunirp nsuirp snuirp uisnrp iusnrp usinrp suinrp isunrp siunrp nisurp insurp nsiurp sniurp isnurp sinurp urisnp ruisnp uirsnp iursnp riusnp irusnp ursinp rusinp usrinp surinp rsuinp sruinp uisrnp iusrnp usirnp suirnp isurnp siurnp risunp irsunp rsiunp sriunp isrunp sirunp nrisup rnisup nirsup inrsup rinsup irnsup nrsiup rnsiup nsriup snriup rsniup srniup nisrup insrup nsirup snirup isnrup sinrup risnup irsnup rsinup srinup isrnup sirnup unrpsi nurpsi urnpsi runpsi nrupsi rnupsi unprsi nuprsi upnrsi punrsi npursi pnursi urpnsi rupnsi uprnsi purnsi rpunsi prunsi nrpusi rnpusi nprusi pnrusi rpnusi prnusi unrspi nurspi urnspi runspi nruspi rnuspi unsrpi nusrpi usnrpi sunrpi nsurpi snurpi ursnpi rusnpi usrnpi surnpi rsunpi srunpi nrsupi rnsupi nsrupi snrupi rsnupi srnupi unpsri nupsri upnsri punsri npusri pnusri unspri nuspri usnpri sunpri nsupri snupri upsnri pusnri uspnri supnri psunri spunri npsuri pnsuri nspuri snpuri psnuri spnuri urpsni rupsni uprsni pursni rpusni prusni urspni ruspni usrpni surpni rsupni srupni upsrni pusrni usprni suprni psurni spurni rpsuni prsuni rspuni srpuni psruni spruni nrpsui rnpsui nprsui pnrsui rpnsui prnsui nrspui rnspui nsrpui snrpui rsnpui srnpui npsrui pnsrui nsprui snprui psnrui spnrui rpsnui prsnui rspnui srpnui psrnui sprnui unipsr nuipsr uinpsr iunpsr niupsr inupsr unpisr nupisr upnisr punisr npuisr pnuisr uipnsr iupnsr upinsr puinsr ipunsr piunsr nipusr inpusr npiusr pniusr ipnusr pinusr unispr nuispr uinspr iunspr niuspr inuspr unsipr nusipr usnipr sunipr nsuipr snuipr uisnpr iusnpr usinpr suinpr isunpr siunpr nisupr insupr nsiupr sniupr isnupr sinupr unpsir nupsir upnsir punsir npusir pnusir unspir nuspir usnpir sunpir nsupir snupir upsnir pusnir uspnir supnir psunir spunir npsuir pnsuir nspuir snpuir psnuir spnuir uipsnr iupsnr upisnr puisnr ipusnr piusnr uispnr iuspnr usipnr suipnr isupnr siupnr upsinr pusinr uspinr supinr psuinr spuinr ipsunr pisunr ispunr sipunr psiunr spiunr nipsur inpsur npisur pnisur ipnsur pinsur nispur inspur nsipur snipur isnpur sinpur npsiur pnsiur nspiur snpiur psniur spniur ipsnur pisnur ispnur sipnur psinur spinur uripsn ruipsn uirpsn iurpsn riupsn irupsn urpisn rupisn uprisn purisn rpuisn pruisn uiprsn iuprsn upirsn puirsn ipursn piursn ripusn irpusn rpiusn priusn iprusn pirusn urispn ruispn uirspn iurspn riuspn iruspn ursipn rusipn usripn suripn rsuipn sruipn uisrpn iusrpn usirpn suirpn isurpn siurpn risupn irsupn rsiupn sriupn isrupn sirupn urpsin rupsin uprsin pursin rpusin prusin urspin ruspin usrpin surpin rsupin srupin upsrin pusrin usprin suprin psurin spurin rpsuin prsuin rspuin srpuin psruin spruin uipsrn iupsrn upisrn puisrn ipusrn piusrn uisprn iusprn usiprn suiprn isuprn siuprn upsirn pusirn uspirn supirn psuirn spuirn ipsurn pisurn ispurn sipurn psiurn spiurn ripsun irpsun rpisun prisun iprsun pirsun rispun irspun rsipun sripun isrpun sirpun rpsiun prsiun rspiun srpiun psriun spriun ipsrun pisrun isprun siprun psirun spirun nripsu rnipsu nirpsu inrpsu rinpsu irnpsu nrpisu rnpisu nprisu pnrisu rpnisu prnisu niprsu inprsu npirsu pnirsu ipnrsu pinrsu ripnsu irpnsu rpinsu prinsu iprnsu pirnsu nrispu rnispu nirspu inrspu rinspu irnspu nrsipu rnsipu nsripu snripu rsnipu srnipu nisrpu insrpu nsirpu snirpu isnrpu sinrpu risnpu irsnpu rsinpu srinpu isrnpu sirnpu nrpsiu rnpsiu nprsiu pnrsiu rpnsiu prnsiu nrspiu rnspiu nsrpiu snrpiu rsnpiu srnpiu npsriu pnsriu nspriu snpriu psnriu spnriu rpsniu prsniu rspniu srpniu psrniu sprniu nipsru inpsru npisru pnisru ipnsru pinsru nispru inspru nsipru snipru isnpru sinpru npsiru pnsiru nspiru snpiru psniru spniru ipsnru pisnru ispnru sipnru psinru spinru ripsnu irpsnu rpisnu prisnu iprsnu pirsnu rispnu irspnu rsipnu sripnu isrpnu sirpnu rpsinu prsinu rspinu srpinu psrinu sprinu ipsrnu pisrnu isprnu siprnu psirnu spirnu
Note: these 'words' (valid or invalid) are all the permutations of the word unrips. These words are obtained by scrambling the letters in unrips.