harden ahrden hraden rhaden arhden rahden hadren ahdren hdaren dharen adhren dahren hrdaen rhdaen hdraen dhraen rdhaen drhaen ardhen radhen adrhen darhen rdahen drahen haredn ahredn hraedn rhaedn arhedn rahedn haerdn aherdn heardn ehardn aehrdn eahrdn hreadn rheadn heradn ehradn rehadn erhadn arehdn raehdn aerhdn earhdn reahdn erahdn hadern ahdern hdaern dhaern adhern dahern haedrn ahedrn headrn ehadrn aehdrn eahdrn hdearn dhearn hedarn ehdarn deharn edharn adehrn daehrn aedhrn eadhrn deahrn edahrn hrdean rhdean hdrean dhrean rdhean drhean hredan rhedan herdan ehrdan rehdan erhdan hderan dheran hedran ehdran dehran edhran rdehan drehan redhan erdhan derhan edrhan ardehn radehn adrehn darehn rdaehn draehn aredhn raedhn aerdhn eardhn readhn eradhn aderhn daerhn aedrhn eadrhn dearhn edarhn rdeahn dreahn redahn erdahn derahn edrahn hardne ahrdne hradne rhadne arhdne rahdne hadrne ahdrne hdarne dharne adhrne dahrne hrdane rhdane hdrane dhrane rdhane drhane ardhne radhne adrhne darhne rdahne drahne harnde ahrnde hrande rhande arhnde rahnde hanrde ahnrde hnarde nharde anhrde nahrde hrnade rhnade hnrade nhrade rnhade nrhade arnhde ranhde anrhde narhde rnahde nrahde hadnre ahdnre hdanre dhanre adhnre dahnre handre ahndre hnadre nhadre anhdre nahdre hdnare dhnare hndare nhdare dnhare ndhare adnhre danhre andhre nadhre dnahre ndahre hrdnae rhdnae hdrnae dhrnae rdhnae drhnae hrndae rhndae hnrdae nhrdae rnhdae nrhdae hdnrae dhnrae hndrae nhdrae dnhrae ndhrae rdnhae drnhae rndhae nrdhae dnrhae ndrhae ardnhe radnhe adrnhe darnhe rdanhe dranhe arndhe randhe anrdhe nardhe rnadhe nradhe adnrhe danrhe andrhe nadrhe dnarhe ndarhe rdnahe drnahe rndahe nrdahe dnrahe ndrahe harend ahrend hraend rhaend arhend rahend haernd ahernd hearnd eharnd aehrnd eahrnd hreand rheand herand ehrand rehand erhand arehnd raehnd aerhnd earhnd reahnd erahnd harned ahrned hraned rhaned arhned rahned hanred ahnred hnared nhared anhred nahred hrnaed rhnaed hnraed nhraed rnhaed nrhaed arnhed ranhed anrhed narhed rnahed nrahed haenrd ahenrd heanrd ehanrd aehnrd eahnrd hanerd ahnerd hnaerd nhaerd anherd naherd henard ehnard hneard nheard enhard nehard aenhrd eanhrd anehrd naehrd enahrd neahrd hrenad rhenad hernad ehrnad rehnad erhnad hrnead rhnead hnread nhread rnhead nrhead henrad ehnrad hnerad nherad enhrad nehrad renhad ernhad rnehad nrehad enrhad nerhad arenhd raenhd aernhd earnhd reanhd eranhd arnehd ranehd anrehd narehd rnaehd nraehd aenrhd eanrhd anerhd naerhd enarhd nearhd renahd ernahd rneahd nreahd enrahd nerahd hadenr ahdenr hdaenr dhaenr adhenr dahenr haednr ahednr headnr ehadnr aehdnr eahdnr hdeanr dheanr hedanr ehdanr dehanr edhanr adehnr daehnr aedhnr eadhnr deahnr edahnr hadner ahdner hdaner dhaner adhner dahner hander ahnder hnader nhader anhder nahder hdnaer dhnaer hndaer nhdaer dnhaer ndhaer adnher danher andher nadher dnaher ndaher haendr ahendr heandr ehandr aehndr eahndr hanedr ahnedr hnaedr nhaedr anhedr nahedr henadr ehnadr hneadr nheadr enhadr nehadr aenhdr eanhdr anehdr naehdr enahdr neahdr hdenar dhenar hednar ehdnar dehnar edhnar hdnear dhnear hndear nhdear dnhear ndhear hendar ehndar hnedar nhedar enhdar nehdar denhar ednhar dnehar ndehar endhar nedhar adenhr daenhr aednhr eadnhr deanhr edanhr adnehr danehr andehr nadehr dnaehr ndaehr aendhr eandhr anedhr naedhr enadhr neadhr denahr ednahr dneahr ndeahr endahr nedahr hrdena rhdena hdrena dhrena rdhena drhena hredna rhedna herdna ehrdna rehdna erhdna hderna dherna hedrna ehdrna dehrna edhrna rdehna drehna redhna erdhna derhna edrhna hrdnea rhdnea hdrnea dhrnea rdhnea drhnea hrndea rhndea hnrdea nhrdea rnhdea nrhdea hdnrea dhnrea hndrea nhdrea dnhrea ndhrea rdnhea drnhea rndhea nrdhea dnrhea ndrhea hrenda rhenda hernda ehrnda rehnda erhnda hrneda rhneda hnreda nhreda rnheda nrheda henrda ehnrda hnerda nherda enhrda nehrda renhda ernhda rnehda nrehda enrhda nerhda hdenra dhenra hednra ehdnra dehnra edhnra hdnera dhnera hndera nhdera dnhera ndhera hendra ehndra hnedra nhedra enhdra nehdra denhra ednhra dnehra ndehra endhra nedhra rdenha drenha rednha erdnha dernha edrnha rdneha drneha rndeha nrdeha dnreha ndreha rendha erndha rnedha nredha enrdha nerdha denrha ednrha dnerha nderha endrha nedrha ardenh radenh adrenh darenh rdaenh draenh arednh raednh aerdnh eardnh readnh eradnh adernh daernh aedrnh eadrnh dearnh edarnh rdeanh dreanh redanh erdanh deranh edranh ardneh radneh adrneh darneh rdaneh draneh arndeh randeh anrdeh nardeh rnadeh nradeh adnreh danreh andreh nadreh dnareh ndareh rdnaeh drnaeh rndaeh nrdaeh dnraeh ndraeh arendh raendh aerndh earndh reandh erandh arnedh ranedh anredh naredh rnaedh nraedh aenrdh eanrdh anerdh naerdh enardh neardh renadh ernadh rneadh nreadh enradh neradh adenrh daenrh aednrh eadnrh deanrh edanrh adnerh danerh anderh naderh dnaerh ndaerh aendrh eandrh anedrh naedrh enadrh neadrh denarh ednarh dnearh ndearh endarh nedarh rdenah drenah rednah erdnah dernah edrnah rdneah drneah rndeah nrdeah dnreah ndreah rendah erndah rnedah nredah enrdah nerdah denrah ednrah dnerah nderah endrah nedrah
Note: these 'words' (valid or invalid) are all the permutations of the word harden. These words are obtained by scrambling the letters in harden.