harder ahrder hrader rhader arhder rahder hadrer ahdrer hdarer dharer adhrer dahrer hrdaer rhdaer hdraer dhraer rdhaer drhaer ardher radher adrher darher rdaher draher haredr ahredr hraedr rhaedr arhedr rahedr haerdr aherdr heardr ehardr aehrdr eahrdr hreadr rheadr heradr ehradr rehadr erhadr arehdr raehdr aerhdr earhdr reahdr erahdr haderr ahderr hdaerr dhaerr adherr daherr haedrr ahedrr headrr ehadrr aehdrr eahdrr hdearr dhearr hedarr ehdarr deharr edharr adehrr daehrr aedhrr eadhrr deahrr edahrr hrdear rhdear hdrear dhrear rdhear drhear hredar rhedar herdar ehrdar rehdar erhdar hderar dherar hedrar ehdrar dehrar edhrar rdehar drehar redhar erdhar derhar edrhar ardehr radehr adrehr darehr rdaehr draehr aredhr raedhr aerdhr eardhr readhr eradhr aderhr daerhr aedrhr eadrhr dearhr edarhr rdeahr dreahr redahr erdahr derahr edrahr hardre ahrdre hradre rhadre arhdre rahdre hadrre ahdrre hdarre dharre adhrre dahrre hrdare rhdare hdrare dhrare rdhare drhare ardhre radhre adrhre darhre rdahre drahre harrde ahrrde hrarde rharde arhrde rahrde harrde ahrrde hrarde rharde arhrde rahrde hrrade rhrade hrrade rhrade rrhade rrhade arrhde rarhde arrhde rarhde rrahde rrahde hadrre ahdrre hdarre dharre adhrre dahrre hardre ahrdre hradre rhadre arhdre rahdre hdrare dhrare hrdare rhdare drhare rdhare adrhre darhre ardhre radhre drahre rdahre hrdrae rhdrae hdrrae dhrrae rdhrae drhrae hrrdae rhrdae hrrdae rhrdae rrhdae rrhdae hdrrae dhrrae hrdrae rhdrae drhrae rdhrae rdrhae drrhae rrdhae rrdhae drrhae rdrhae ardrhe radrhe adrrhe darrhe rdarhe drarhe arrdhe rardhe arrdhe rardhe rradhe rradhe adrrhe darrhe ardrhe radrhe drarhe rdarhe rdrahe drrahe rrdahe rrdahe drrahe rdrahe harerd ahrerd hraerd rhaerd arherd raherd haerrd aherrd hearrd eharrd aehrrd eahrrd hreard rheard herard ehrard rehard erhard arehrd raehrd aerhrd earhrd reahrd erahrd harred ahrred hrared rhared arhred rahred harred ahrred hrared rhared arhred rahred hrraed rhraed hrraed rhraed rrhaed rrhaed arrhed rarhed arrhed rarhed rrahed rrahed haerrd aherrd hearrd eharrd aehrrd eahrrd harerd ahrerd hraerd rhaerd arherd raherd herard ehrard hreard rheard erhard rehard aerhrd earhrd arehrd raehrd erahrd reahrd hrerad rherad herrad ehrrad rehrad erhrad hrread rhread hrread rhread rrhead rrhead herrad ehrrad hrerad rherad erhrad rehrad rerhad errhad rrehad rrehad errhad rerhad arerhd raerhd aerrhd earrhd rearhd erarhd arrehd rarehd arrehd rarehd rraehd rraehd aerrhd earrhd arerhd raerhd erarhd rearhd rerahd errahd rreahd rreahd errahd rerahd haderr ahderr hdaerr dhaerr adherr daherr haedrr ahedrr headrr ehadrr aehdrr eahdrr hdearr dhearr hedarr ehdarr deharr edharr adehrr daehrr aedhrr eadhrr deahrr edahrr hadrer ahdrer hdarer dharer adhrer dahrer harder ahrder hrader rhader arhder rahder hdraer dhraer hrdaer rhdaer drhaer rdhaer adrher darher ardher radher draher rdaher haerdr aherdr heardr ehardr aehrdr eahrdr haredr ahredr hraedr rhaedr arhedr rahedr heradr ehradr hreadr rheadr erhadr rehadr aerhdr earhdr arehdr raehdr erahdr reahdr hderar dherar hedrar ehdrar dehrar edhrar hdrear dhrear hrdear rhdear drhear rdhear herdar ehrdar hredar rhedar erhdar rehdar derhar edrhar drehar rdehar erdhar redhar aderhr daerhr aedrhr eadrhr dearhr edarhr adrehr darehr ardehr radehr draehr rdaehr aerdhr eardhr aredhr raedhr eradhr readhr derahr edrahr dreahr rdeahr erdahr redahr hrdera rhdera hdrera dhrera rdhera drhera hredra rhedra herdra ehrdra rehdra erhdra hderra dherra hedrra ehdrra dehrra edhrra rdehra drehra redhra erdhra derhra edrhra hrdrea rhdrea hdrrea dhrrea rdhrea drhrea hrrdea rhrdea hrrdea rhrdea rrhdea rrhdea hdrrea dhrrea hrdrea rhdrea drhrea rdhrea rdrhea drrhea rrdhea rrdhea drrhea rdrhea hrerda rherda herrda ehrrda rehrda erhrda hrreda rhreda hrreda rhreda rrheda rrheda herrda ehrrda hrerda rherda erhrda rehrda rerhda errhda rrehda rrehda errhda rerhda hderra dherra hedrra ehdrra dehrra edhrra hdrera dhrera hrdera rhdera drhera rdhera herdra ehrdra hredra rhedra erhdra rehdra derhra edrhra drehra rdehra erdhra redhra rderha drerha redrha erdrha derrha edrrha rdreha drreha rrdeha rrdeha drreha rdreha rerdha errdha rredha rredha errdha rerdha derrha edrrha drerha rderha erdrha redrha arderh raderh adrerh darerh rdaerh draerh aredrh raedrh aerdrh eardrh readrh eradrh aderrh daerrh aedrrh eadrrh dearrh edarrh rdearh drearh redarh erdarh derarh edrarh ardreh radreh adrreh darreh rdareh drareh arrdeh rardeh arrdeh rardeh rradeh rradeh adrreh darreh ardreh radreh drareh rdareh rdraeh drraeh rrdaeh rrdaeh drraeh rdraeh arerdh raerdh aerrdh earrdh reardh erardh arredh raredh arredh raredh rraedh rraedh aerrdh earrdh arerdh raerdh erardh reardh reradh erradh rreadh rreadh erradh reradh aderrh daerrh aedrrh eadrrh dearrh edarrh adrerh darerh arderh raderh draerh rdaerh aerdrh eardrh aredrh raedrh eradrh readrh derarh edrarh drearh rdearh erdarh redarh rderah drerah redrah erdrah derrah edrrah rdreah drreah rrdeah rrdeah drreah rdreah rerdah errdah rredah rredah errdah rerdah derrah edrrah drerah rderah erdrah redrah
Note: these 'words' (valid or invalid) are all the permutations of the word harder. These words are obtained by scrambling the letters in harder.