unhead nuhead uhnead hunead nhuead hnuead unehad nuehad uenhad eunhad neuhad enuhad uhenad huenad uehnad euhnad heunad ehunad nheuad hneuad nehuad enhuad henuad ehnuad unhaed nuhaed uhnaed hunaed nhuaed hnuaed unahed nuahed uanhed aunhed nauhed anuhed uhaned huaned uahned auhned hauned ahuned nhaued hnaued nahued anhued hanued ahnued uneahd nueahd uenahd eunahd neuahd enuahd unaehd nuaehd uanehd aunehd nauehd anuehd ueanhd euanhd uaenhd auenhd eaunhd aeunhd neauhd enauhd naeuhd aneuhd eanuhd aenuhd uheand hueand uehand euhand heuand ehuand uhaend huaend uahend auhend hauend ahuend ueahnd euahnd uaehnd auehnd eauhnd aeuhnd heaund ehaund haeund aheund eahund aehund nheaud hneaud nehaud enhaud henaud ehnaud nhaeud hnaeud naheud anheud haneud ahneud neahud enahud naehud anehud eanhud aenhud heanud ehanud haenud ahenud eahnud aehnud unheda nuheda uhneda huneda nhueda hnueda unehda nuehda uenhda eunhda neuhda enuhda uhenda huenda uehnda euhnda heunda ehunda nheuda hneuda nehuda enhuda henuda ehnuda unhdea nuhdea uhndea hundea nhudea hnudea undhea nudhea udnhea dunhea nduhea dnuhea uhdnea hudnea udhnea duhnea hdunea dhunea nhduea hnduea ndhuea dnhuea hdnuea dhnuea unedha nuedha uendha eundha neudha enudha undeha nudeha udneha duneha ndueha dnueha uednha eudnha udenha duenha edunha deunha neduha enduha ndeuha dneuha ednuha denuha uhedna huedna uehdna euhdna heudna ehudna uhdena hudena udhena duhena hduena dhuena uedhna eudhna udehna duehna eduhna deuhna heduna ehduna hdeuna dheuna edhuna dehuna nhedua hnedua nehdua enhdua hendua ehndua nhdeua hndeua ndheua dnheua hdneua dhneua nedhua endhua ndehua dnehua ednhua denhua hednua ehdnua hdenua dhenua edhnua dehnua unhade nuhade uhnade hunade nhuade hnuade unahde nuahde uanhde aunhde nauhde anuhde uhande huande uahnde auhnde haunde ahunde nhaude hnaude nahude anhude hanude ahnude unhdae nuhdae uhndae hundae nhudae hnudae undhae nudhae udnhae dunhae nduhae dnuhae uhdnae hudnae udhnae duhnae hdunae dhunae nhduae hnduae ndhuae dnhuae hdnuae dhnuae unadhe nuadhe uandhe aundhe naudhe anudhe undahe nudahe udnahe dunahe nduahe dnuahe uadnhe audnhe udanhe duanhe adunhe daunhe naduhe anduhe ndauhe dnauhe adnuhe danuhe uhadne huadne uahdne auhdne haudne ahudne uhdane hudane udhane duhane hduane dhuane uadhne audhne udahne duahne aduhne dauhne hadune ahdune hdaune dhaune adhune dahune nhadue hnadue nahdue anhdue handue ahndue nhdaue hndaue ndhaue dnhaue hdnaue dhnaue nadhue andhue ndahue dnahue adnhue danhue hadnue ahdnue hdanue dhanue adhnue dahnue uneadh nueadh uenadh eunadh neuadh enuadh unaedh nuaedh uanedh aunedh nauedh anuedh ueandh euandh uaendh auendh eaundh aeundh neaudh enaudh naeudh aneudh eanudh aenudh unedah nuedah uendah eundah neudah enudah undeah nudeah udneah duneah ndueah dnueah uednah eudnah udenah duenah edunah deunah neduah enduah ndeuah dneuah ednuah denuah unadeh nuadeh uandeh aundeh naudeh anudeh undaeh nudaeh udnaeh dunaeh nduaeh dnuaeh uadneh audneh udaneh duaneh aduneh dauneh nadueh andueh ndaueh dnaueh adnueh danueh ueadnh euadnh uaednh auednh eaudnh aeudnh uedanh eudanh udeanh dueanh eduanh deuanh uadenh audenh udaenh duaenh aduenh dauenh eadunh aedunh edaunh deaunh adeunh daeunh neaduh enaduh naeduh aneduh eanduh aenduh nedauh endauh ndeauh dneauh ednauh denauh nadeuh andeuh ndaeuh dnaeuh adneuh daneuh eadnuh aednuh edanuh deanuh adenuh daenuh uheadn hueadn uehadn euhadn heuadn ehuadn uhaedn huaedn uahedn auhedn hauedn ahuedn ueahdn euahdn uaehdn auehdn eauhdn aeuhdn heaudn ehaudn haeudn aheudn eahudn aehudn uhedan huedan uehdan euhdan heudan ehudan uhdean hudean udhean duhean hduean dhuean uedhan eudhan udehan duehan eduhan deuhan heduan ehduan hdeuan dheuan edhuan dehuan uhaden huaden uahden auhden hauden ahuden uhdaen hudaen udhaen duhaen hduaen dhuaen uadhen audhen udahen duahen aduhen dauhen haduen ahduen hdauen dhauen adhuen dahuen ueadhn euadhn uaedhn auedhn eaudhn aeudhn uedahn eudahn udeahn dueahn eduahn deuahn uadehn audehn udaehn duaehn aduehn dauehn eaduhn aeduhn edauhn deauhn adeuhn daeuhn headun ehadun haedun ahedun eahdun aehdun hedaun ehdaun hdeaun dheaun edhaun dehaun hadeun ahdeun hdaeun dhaeun adheun daheun eadhun aedhun edahun deahun adehun daehun nheadu hneadu nehadu enhadu henadu ehnadu nhaedu hnaedu nahedu anhedu hanedu ahnedu neahdu enahdu naehdu anehdu eanhdu aenhdu heandu ehandu haendu ahendu eahndu aehndu nhedau hnedau nehdau enhdau hendau ehndau nhdeau hndeau ndheau dnheau hdneau dhneau nedhau endhau ndehau dnehau ednhau denhau hednau ehdnau hdenau dhenau edhnau dehnau nhadeu hnadeu nahdeu anhdeu handeu ahndeu nhdaeu hndaeu ndhaeu dnhaeu hdnaeu dhnaeu nadheu andheu ndaheu dnaheu adnheu danheu hadneu ahdneu hdaneu dhaneu adhneu dahneu neadhu enadhu naedhu anedhu eandhu aendhu nedahu endahu ndeahu dneahu ednahu denahu nadehu andehu ndaehu dnaehu adnehu danehu eadnhu aednhu edanhu deanhu adenhu daenhu headnu ehadnu haednu ahednu eahdnu aehdnu hedanu ehdanu hdeanu dheanu edhanu dehanu hadenu ahdenu hdaenu dhaenu adhenu dahenu eadhnu aedhnu edahnu deahnu adehnu daehnu
Note: these 'words' (valid or invalid) are all the permutations of the word unhead. These words are obtained by scrambling the letters in unhead.