houdan ohudan huodan uhodan ouhdan uohdan hoduan ohduan hdouan dhouan odhuan dohuan hudoan uhdoan hduoan dhuoan udhoan duhoan oudhan uodhan oduhan douhan udohan duohan houadn ohuadn huoadn uhoadn ouhadn uohadn hoaudn ohaudn haoudn ahoudn oahudn aohudn huaodn uhaodn hauodn ahuodn uahodn auhodn ouahdn uoahdn oauhdn aouhdn uaohdn auohdn hodaun ohdaun hdoaun dhoaun odhaun dohaun hoadun ohadun haodun ahodun oahdun aohdun hdaoun dhaoun hadoun ahdoun dahoun adhoun odahun doahun oadhun aodhun daohun adohun hudaon uhdaon hduaon dhuaon udhaon duhaon huadon uhadon haudon ahudon uahdon auhdon hdauon dhauon haduon ahduon dahuon adhuon udahon duahon uadhon audhon dauhon aduhon oudahn uodahn oduahn douahn udoahn duoahn ouadhn uoadhn oaudhn aoudhn uaodhn auodhn odauhn doauhn oaduhn aoduhn daouhn adouhn udaohn duaohn uadohn audohn dauohn aduohn houdna ohudna huodna uhodna ouhdna uohdna hoduna ohduna hdouna dhouna odhuna dohuna hudona uhdona hduona dhuona udhona duhona oudhna uodhna oduhna douhna udohna duohna hounda ohunda huonda uhonda ouhnda uohnda honuda ohnuda hnouda nhouda onhuda nohuda hunoda uhnoda hnuoda nhuoda unhoda nuhoda ounhda uonhda onuhda nouhda unohda nuohda hodnua ohdnua hdonua dhonua odhnua dohnua hondua ohndua hnodua nhodua onhdua nohdua hdnoua dhnoua hndoua nhdoua dnhoua ndhoua odnhua donhua ondhua nodhua dnohua ndohua hudnoa uhdnoa hdunoa dhunoa udhnoa duhnoa hundoa uhndoa hnudoa nhudoa unhdoa nuhdoa hdnuoa dhnuoa hnduoa nhduoa dnhuoa ndhuoa udnhoa dunhoa undhoa nudhoa dnuhoa nduhoa oudnha uodnha odunha dounha udonha duonha oundha uondha onudha noudha unodha nuodha odnuha donuha onduha noduha dnouha ndouha udnoha dunoha undoha nudoha dnuoha nduoha houand ohuand huoand uhoand ouhand uohand hoaund ohaund haound ahound oahund aohund huaond uhaond hauond ahuond uahond auhond ouahnd uoahnd oauhnd aouhnd uaohnd auohnd hounad ohunad huonad uhonad ouhnad uohnad honuad ohnuad hnouad nhouad onhuad nohuad hunoad uhnoad hnuoad nhuoad unhoad nuhoad ounhad uonhad onuhad nouhad unohad nuohad hoanud ohanud haonud ahonud oahnud aohnud honaud ohnaud hnoaud nhoaud onhaud nohaud hanoud ahnoud hnaoud nhaoud anhoud nahoud oanhud aonhud onahud noahud anohud naohud huanod uhanod haunod ahunod uahnod auhnod hunaod uhnaod hnuaod nhuaod unhaod nuhaod hanuod ahnuod hnauod nhauod anhuod nahuod uanhod aunhod unahod nuahod anuhod nauhod ouanhd uoanhd oaunhd aounhd uaonhd auonhd ounahd uonahd onuahd nouahd unoahd nuoahd oanuhd aonuhd onauhd noauhd anouhd naouhd uanohd aunohd unaohd nuaohd anuohd nauohd hodanu ohdanu hdoanu dhoanu odhanu dohanu hoadnu ohadnu haodnu ahodnu oahdnu aohdnu hdaonu dhaonu hadonu ahdonu dahonu adhonu odahnu doahnu oadhnu aodhnu daohnu adohnu hodnau ohdnau hdonau dhonau odhnau dohnau hondau ohndau hnodau nhodau onhdau nohdau hdnoau dhnoau hndoau nhdoau dnhoau ndhoau odnhau donhau ondhau nodhau dnohau ndohau hoandu ohandu haondu ahondu oahndu aohndu honadu ohnadu hnoadu nhoadu onhadu nohadu hanodu ahnodu hnaodu nhaodu anhodu nahodu oanhdu aonhdu onahdu noahdu anohdu naohdu hdanou dhanou hadnou ahdnou dahnou adhnou hdnaou dhnaou hndaou nhdaou dnhaou ndhaou handou ahndou hnadou nhadou anhdou nahdou danhou adnhou dnahou ndahou andhou nadhou odanhu doanhu oadnhu aodnhu daonhu adonhu odnahu donahu ondahu nodahu dnoahu ndoahu oandhu aondhu onadhu noadhu anodhu naodhu danohu adnohu dnaohu ndaohu andohu nadohu hudano uhdano hduano dhuano udhano duhano huadno uhadno haudno ahudno uahdno auhdno hdauno dhauno haduno ahduno dahuno adhuno udahno duahno uadhno audhno dauhno aduhno hudnao uhdnao hdunao dhunao udhnao duhnao hundao uhndao hnudao nhudao unhdao nuhdao hdnuao dhnuao hnduao nhduao dnhuao ndhuao udnhao dunhao undhao nudhao dnuhao nduhao huando uhando haundo ahundo uahndo auhndo hunado uhnado hnuado nhuado unhado nuhado hanudo ahnudo hnaudo nhaudo anhudo nahudo uanhdo aunhdo unahdo nuahdo anuhdo nauhdo hdanuo dhanuo hadnuo ahdnuo dahnuo adhnuo hdnauo dhnauo hndauo nhdauo dnhauo ndhauo handuo ahnduo hnaduo nhaduo anhduo nahduo danhuo adnhuo dnahuo ndahuo andhuo nadhuo udanho duanho uadnho audnho daunho adunho udnaho dunaho undaho nudaho dnuaho nduaho uandho aundho unadho nuadho anudho naudho danuho adnuho dnauho ndauho anduho naduho oudanh uodanh oduanh douanh udoanh duoanh ouadnh uoadnh oaudnh aoudnh uaodnh auodnh odaunh doaunh oadunh aodunh daounh adounh udaonh duaonh uadonh audonh dauonh aduonh oudnah uodnah odunah dounah udonah duonah oundah uondah onudah noudah unodah nuodah odnuah donuah onduah noduah dnouah ndouah udnoah dunoah undoah nudoah dnuoah nduoah ouandh uoandh oaundh aoundh uaondh auondh ounadh uonadh onuadh nouadh unoadh nuoadh oanudh aonudh onaudh noaudh anoudh naoudh uanodh aunodh unaodh nuaodh anuodh nauodh odanuh doanuh oadnuh aodnuh daonuh adonuh odnauh donauh ondauh nodauh dnoauh ndoauh oanduh aonduh onaduh noaduh anoduh naoduh danouh adnouh dnaouh ndaouh andouh nadouh udanoh duanoh uadnoh audnoh daunoh adunoh udnaoh dunaoh undaoh nudaoh dnuaoh nduaoh uandoh aundoh unadoh nuadoh anudoh naudoh danuoh adnuoh dnauoh ndauoh anduoh naduoh
Note: these 'words' (valid or invalid) are all the permutations of the word houdan. These words are obtained by scrambling the letters in houdan.