arches raches acrhes carhes rcahes crahes arhces rahces ahrces harces rhaces hraces achres cahres ahcres hacres chares hcares rchaes crhaes rhcaes hrcaes chraes hcraes arcehs racehs acrehs carehs rcaehs craehs arechs raechs aerchs earchs reachs erachs acerhs caerhs aecrhs eacrhs cearhs ecarhs rceahs creahs recahs ercahs cerahs ecrahs arhecs rahecs ahrecs harecs rhaecs hraecs arehcs raehcs aerhcs earhcs reahcs erahcs ahercs haercs aehrcs eahrcs hearcs eharcs rheacs hreacs rehacs erhacs heracs ehracs achers cahers ahcers hacers chaers hcaers acehrs caehrs aechrs eachrs ceahrs ecahrs ahecrs haecrs aehcrs eahcrs heacrs ehacrs chears hcears cehars echars hecars ehcars rcheas crheas rhceas hrceas chreas hcreas rcehas crehas rechas erchas cerhas ecrhas rhecas hrecas rehcas erhcas hercas ehrcas cheras hceras cehras echras hecras ehcras archse rachse acrhse carhse rcahse crahse arhcse rahcse ahrcse harcse rhacse hracse achrse cahrse ahcrse hacrse charse hcarse rchase crhase rhcase hrcase chrase hcrase arcshe racshe acrshe carshe rcashe crashe arsche rasche asrche sarche rsache srache acsrhe casrhe ascrhe sacrhe csarhe scarhe rcsahe crsahe rscahe srcahe csrahe scrahe arhsce rahsce ahrsce harsce rhasce hrasce arshce rashce asrhce sarhce rsahce srahce ahsrce hasrce ashrce sahrce hsarce sharce rhsace hrsace rshace srhace hsrace shrace achsre cahsre ahcsre hacsre chasre hcasre acshre cashre aschre sachre csahre scahre ahscre hascre ashcre sahcre hsacre shacre chsare hcsare cshare schare hscare shcare rchsae crhsae rhcsae hrcsae chrsae hcrsae rcshae crshae rschae srchae csrhae scrhae rhscae hrscae rshcae srhcae hsrcae shrcae chsrae hcsrae cshrae schrae hscrae shcrae arcesh racesh acresh caresh rcaesh craesh arecsh raecsh aercsh earcsh reacsh eracsh acersh caersh aecrsh eacrsh cearsh ecarsh rceash creash recash ercash cerash ecrash arcseh racseh acrseh carseh rcaseh craseh arsceh rasceh asrceh sarceh rsaceh sraceh acsreh casreh ascreh sacreh csareh scareh rcsaeh crsaeh rscaeh srcaeh csraeh scraeh aresch raesch aersch earsch reasch erasch arsech rasech asrech sarech rsaech sraech aesrch easrch aserch saerch esarch search resach ersach rseach sreach esrach serach acesrh caesrh aecsrh eacsrh ceasrh ecasrh acserh caserh ascerh sacerh csaerh scaerh aescrh eascrh asecrh saecrh esacrh seacrh cesarh ecsarh csearh scearh escarh secarh rcesah cresah recsah ercsah cersah ecrsah rcseah crseah rsceah srceah csreah screah rescah erscah rsecah srecah esrcah sercah cesrah ecsrah cserah scerah escrah secrah arhesc rahesc ahresc haresc rhaesc hraesc arehsc raehsc aerhsc earhsc reahsc erahsc ahersc haersc aehrsc eahrsc hearsc eharsc rheasc hreasc rehasc erhasc herasc ehrasc arhsec rahsec ahrsec harsec rhasec hrasec arshec rashec asrhec sarhec rsahec srahec ahsrec hasrec ashrec sahrec hsarec sharec rhsaec hrsaec rshaec srhaec hsraec shraec areshc raeshc aershc earshc reashc erashc arsehc rasehc asrehc sarehc rsaehc sraehc aesrhc easrhc aserhc saerhc esarhc searhc resahc ersahc rseahc sreahc esrahc serahc ahesrc haesrc aehsrc eahsrc heasrc ehasrc ahserc haserc asherc saherc hsaerc shaerc aeshrc eashrc asehrc saehrc esahrc seahrc hesarc ehsarc hsearc shearc esharc seharc rhesac hresac rehsac erhsac hersac ehrsac rhseac hrseac rsheac srheac hsreac shreac reshac ershac rsehac srehac esrhac serhac hesrac ehsrac hserac sherac eshrac sehrac achesr cahesr ahcesr hacesr chaesr hcaesr acehsr caehsr aechsr eachsr ceahsr ecahsr ahecsr haecsr aehcsr eahcsr heacsr ehacsr cheasr hceasr cehasr echasr hecasr ehcasr achser cahser ahcser hacser chaser hcaser acsher casher ascher sacher csaher scaher ahscer hascer ashcer sahcer hsacer shacer chsaer hcsaer cshaer schaer hscaer shcaer aceshr caeshr aecshr eacshr ceashr ecashr acsehr casehr ascehr sacehr csaehr scaehr aeschr easchr asechr saechr esachr seachr cesahr ecsahr cseahr sceahr escahr secahr ahescr haescr aehscr eahscr heascr ehascr ahsecr hasecr ashecr sahecr hsaecr shaecr aeshcr eashcr asehcr saehcr esahcr seahcr hesacr ehsacr hseacr sheacr eshacr sehacr chesar hcesar cehsar echsar hecsar ehcsar chsear hcsear cshear schear hscear shcear ceshar ecshar csehar scehar eschar sechar hescar ehscar hsecar shecar eshcar sehcar rchesa crhesa rhcesa hrcesa chresa hcresa rcehsa crehsa rechsa erchsa cerhsa ecrhsa rhecsa hrecsa rehcsa erhcsa hercsa ehrcsa chersa hcersa cehrsa echrsa hecrsa ehcrsa rchsea crhsea rhcsea hrcsea chrsea hcrsea rcshea crshea rschea srchea csrhea scrhea rhscea hrscea rshcea srhcea hsrcea shrcea chsrea hcsrea cshrea schrea hscrea shcrea rcesha cresha recsha ercsha cersha ecrsha rcseha crseha rsceha srceha csreha screha rescha erscha rsecha srecha esrcha sercha cesrha ecsrha cserha scerha escrha secrha rhesca hresca rehsca erhsca hersca ehrsca rhseca hrseca rsheca srheca hsreca shreca reshca ershca rsehca srehca esrhca serhca hesrca ehsrca hserca sherca eshrca sehrca chesra hcesra cehsra echsra hecsra ehcsra chsera hcsera cshera schera hscera shcera ceshra ecshra csehra scehra eschra sechra hescra ehscra hsecra shecra eshcra sehcra
Note: these 'words' (valid or invalid) are all the permutations of the word arches. These words are obtained by scrambling the letters in arches.