unrich nurich urnich runich nruich rnuich unirch nuirch uinrch iunrch niurch inurch urinch ruinch uirnch iurnch riunch irunch nriuch rniuch niruch inruch rinuch irnuch unrcih nurcih urncih runcih nrucih rnucih uncrih nucrih ucnrih cunrih ncurih cnurih urcnih rucnih ucrnih curnih rcunih crunih nrcuih rncuih ncruih cnruih rcnuih crnuih unicrh nuicrh uincrh iuncrh niucrh inucrh uncirh nucirh ucnirh cunirh ncuirh cnuirh uicnrh iucnrh ucinrh cuinrh icunrh ciunrh nicurh incurh nciurh cniurh icnurh cinurh uricnh ruicnh uircnh iurcnh riucnh irucnh urcinh rucinh ucrinh curinh rcuinh cruinh uicrnh iucrnh ucirnh cuirnh icurnh ciurnh ricunh ircunh rciunh criunh icrunh cirunh nricuh rnicuh nircuh inrcuh rincuh irncuh nrciuh rnciuh ncriuh cnriuh rcniuh crniuh nicruh incruh nciruh cniruh icnruh cinruh ricnuh ircnuh rcinuh crinuh icrnuh cirnuh unrihc nurihc urnihc runihc nruihc rnuihc unirhc nuirhc uinrhc iunrhc niurhc inurhc urinhc ruinhc uirnhc iurnhc riunhc irunhc nriuhc rniuhc niruhc inruhc rinuhc irnuhc unrhic nurhic urnhic runhic nruhic rnuhic unhric nuhric uhnric hunric nhuric hnuric urhnic ruhnic uhrnic hurnic rhunic hrunic nrhuic rnhuic nhruic hnruic rhnuic hrnuic unihrc nuihrc uinhrc iunhrc niuhrc inuhrc unhirc nuhirc uhnirc hunirc nhuirc hnuirc uihnrc iuhnrc uhinrc huinrc ihunrc hiunrc nihurc inhurc nhiurc hniurc ihnurc hinurc urihnc ruihnc uirhnc iurhnc riuhnc iruhnc urhinc ruhinc uhrinc hurinc rhuinc hruinc uihrnc iuhrnc uhirnc huirnc ihurnc hiurnc rihunc irhunc rhiunc hriunc ihrunc hirunc nrihuc rnihuc nirhuc inrhuc rinhuc irnhuc nrhiuc rnhiuc nhriuc hnriuc rhniuc hrniuc nihruc inhruc nhiruc hniruc ihnruc hinruc rihnuc irhnuc rhinuc hrinuc ihrnuc hirnuc unrchi nurchi urnchi runchi nruchi rnuchi uncrhi nucrhi ucnrhi cunrhi ncurhi cnurhi urcnhi rucnhi ucrnhi curnhi rcunhi crunhi nrcuhi rncuhi ncruhi cnruhi rcnuhi crnuhi unrhci nurhci urnhci runhci nruhci rnuhci unhrci nuhrci uhnrci hunrci nhurci hnurci urhnci ruhnci uhrnci hurnci rhunci hrunci nrhuci rnhuci nhruci hnruci rhnuci hrnuci unchri nuchri ucnhri cunhri ncuhri cnuhri unhcri nuhcri uhncri huncri nhucri hnucri uchnri cuhnri uhcnri hucnri chunri hcunri nchuri cnhuri nhcuri hncuri chnuri hcnuri urchni ruchni ucrhni curhni rcuhni cruhni urhcni ruhcni uhrcni hurcni rhucni hrucni uchrni cuhrni uhcrni hucrni churni hcurni rchuni crhuni rhcuni hrcuni chruni hcruni nrchui rnchui ncrhui cnrhui rcnhui crnhui nrhcui rnhcui nhrcui hnrcui rhncui hrncui nchrui cnhrui nhcrui hncrui chnrui hcnrui rchnui crhnui rhcnui hrcnui chrnui hcrnui unichr nuichr uinchr iunchr niuchr inuchr uncihr nucihr ucnihr cunihr ncuihr cnuihr uicnhr iucnhr ucinhr cuinhr icunhr ciunhr nicuhr incuhr nciuhr cniuhr icnuhr cinuhr unihcr nuihcr uinhcr iunhcr niuhcr inuhcr unhicr nuhicr uhnicr hunicr nhuicr hnuicr uihncr iuhncr uhincr huincr ihuncr hiuncr nihucr inhucr nhiucr hniucr ihnucr hinucr unchir nuchir ucnhir cunhir ncuhir cnuhir unhcir nuhcir uhncir huncir nhucir hnucir uchnir cuhnir uhcnir hucnir chunir hcunir nchuir cnhuir nhcuir hncuir chnuir hcnuir uichnr iuchnr ucihnr cuihnr icuhnr ciuhnr uihcnr iuhcnr uhicnr huicnr ihucnr hiucnr uchinr cuhinr uhcinr hucinr chuinr hcuinr ichunr cihunr ihcunr hicunr chiunr hciunr nichur inchur ncihur cnihur icnhur cinhur nihcur inhcur nhicur hnicur ihncur hincur nchiur cnhiur nhciur hnciur chniur hcniur ichnur cihnur ihcnur hicnur chinur hcinur urichn ruichn uirchn iurchn riuchn iruchn urcihn rucihn ucrihn curihn rcuihn cruihn uicrhn iucrhn ucirhn cuirhn icurhn ciurhn ricuhn ircuhn rciuhn criuhn icruhn ciruhn urihcn ruihcn uirhcn iurhcn riuhcn iruhcn urhicn ruhicn uhricn huricn rhuicn hruicn uihrcn iuhrcn uhircn huircn ihurcn hiurcn rihucn irhucn rhiucn hriucn ihrucn hirucn urchin ruchin ucrhin curhin rcuhin cruhin urhcin ruhcin uhrcin hurcin rhucin hrucin uchrin cuhrin uhcrin hucrin churin hcurin rchuin crhuin rhcuin hrcuin chruin hcruin uichrn iuchrn ucihrn cuihrn icuhrn ciuhrn uihcrn iuhcrn uhicrn huicrn ihucrn hiucrn uchirn cuhirn uhcirn hucirn chuirn hcuirn ichurn cihurn ihcurn hicurn chiurn hciurn richun irchun rcihun crihun icrhun cirhun rihcun irhcun rhicun hricun ihrcun hircun rchiun crhiun rhciun hrciun chriun hcriun ichrun cihrun ihcrun hicrun chirun hcirun nrichu rnichu nirchu inrchu rinchu irnchu nrcihu rncihu ncrihu cnrihu rcnihu crnihu nicrhu incrhu ncirhu cnirhu icnrhu cinrhu ricnhu ircnhu rcinhu crinhu icrnhu cirnhu nrihcu rnihcu nirhcu inrhcu rinhcu irnhcu nrhicu rnhicu nhricu hnricu rhnicu hrnicu nihrcu inhrcu nhircu hnircu ihnrcu hinrcu rihncu irhncu rhincu hrincu ihrncu hirncu nrchiu rnchiu ncrhiu cnrhiu rcnhiu crnhiu nrhciu rnhciu nhrciu hnrciu rhnciu hrnciu nchriu cnhriu nhcriu hncriu chnriu hcnriu rchniu crhniu rhcniu hrcniu chrniu hcrniu nichru inchru ncihru cnihru icnhru cinhru nihcru inhcru nhicru hnicru ihncru hincru nchiru cnhiru nhciru hnciru chniru hcniru ichnru cihnru ihcnru hicnru chinru hcinru richnu irchnu rcihnu crihnu icrhnu cirhnu rihcnu irhcnu rhicnu hricnu ihrcnu hircnu rchinu crhinu rhcinu hrcinu chrinu hcrinu ichrnu cihrnu ihcrnu hicrnu chirnu hcirnu
Note: these 'words' (valid or invalid) are all the permutations of the word unrich. These words are obtained by scrambling the letters in unrich.