hearth eharth haerth aherth eahrth aehrth herath ehrath hreath rheath erhath rehath hareth ahreth hraeth rhaeth arheth raheth earhth aerhth erahth reahth arehth raehth heatrh ehatrh haetrh ahetrh eahtrh aehtrh hetarh ehtarh htearh thearh etharh teharh haterh ahterh htaerh thaerh atherh taherh eathrh aethrh etahrh teahrh atehrh taehrh hertah ehrtah hretah rhetah erhtah rehtah hetrah ehtrah hterah therah ethrah tehrah hrteah rhteah htreah threah rtheah trheah erthah rethah etrhah terhah rtehah trehah harteh ahrteh hrateh rhateh arhteh rahteh hatreh ahtreh htareh thareh athreh tahreh hrtaeh rhtaeh htraeh thraeh rthaeh trhaeh artheh ratheh atrheh tarheh rtaheh traheh earthh aerthh erathh reathh arethh raethh eatrhh aetrhh etarhh tearhh aterhh taerhh ertahh retahh etrahh terahh rteahh treahh artehh ratehh atrehh tarehh rtaehh traehh hearht eharht haerht aherht eahrht aehrht heraht ehraht hreaht rheaht erhaht rehaht hareht ahreht hraeht rhaeht arheht raheht earhht aerhht erahht reahht arehht raehht heahrt ehahrt haehrt ahehrt eahhrt aehhrt hehart ehhart hheart hheart ehhart hehart hahert ahhert hhaert hhaert ahhert hahert eahhrt aehhrt ehahrt heahrt ahehrt haehrt herhat ehrhat hrehat rhehat erhhat rehhat hehrat ehhrat hherat hherat ehhrat hehrat hrheat rhheat hhreat hhreat rhheat hrheat erhhat rehhat ehrhat herhat rhehat hrehat harhet ahrhet hrahet rhahet arhhet rahhet hahret ahhret hharet hharet ahhret hahret hrhaet rhhaet hhraet hhraet rhhaet hrhaet arhhet rahhet ahrhet harhet rhahet hrahet earhht aerhht erahht reahht arehht raehht eahrht aehrht eharht hearht aherht haerht erhaht rehaht ehraht heraht rheaht hreaht arheht raheht ahreht hareht rhaeht hraeht heathr ehathr haethr ahethr eahthr aehthr hetahr ehtahr hteahr theahr ethahr tehahr hatehr ahtehr htaehr thaehr athehr tahehr eathhr aethhr etahhr teahhr atehhr taehhr heahtr ehahtr haehtr ahehtr eahhtr aehhtr hehatr ehhatr hheatr hheatr ehhatr hehatr hahetr ahhetr hhaetr hhaetr ahhetr hahetr eahhtr aehhtr ehahtr heahtr ahehtr haehtr hethar ehthar htehar thehar ethhar tehhar hehtar ehhtar hhetar hhetar ehhtar hehtar hthear thhear hhtear hhtear thhear hthear ethhar tehhar ehthar hethar thehar htehar hather ahther htaher thaher athher tahher hahter ahhter hhater hhater ahhter hahter hthaer thhaer hhtaer hhtaer thhaer hthaer athher tahher ahther hather thaher htaher eathhr aethhr etahhr teahhr atehhr taehhr eahthr aehthr ehathr heathr ahethr haethr ethahr tehahr ehtahr hetahr theahr hteahr athehr tahehr ahtehr hatehr thaehr htaehr hertha ehrtha hretha rhetha erhtha rehtha hetrha ehtrha hterha therha ethrha tehrha hrteha rhteha htreha threha rtheha trheha erthha rethha etrhha terhha rtehha trehha herhta ehrhta hrehta rhehta erhhta rehhta hehrta ehhrta hherta hherta ehhrta hehrta hrheta rhheta hhreta hhreta rhheta hrheta erhhta rehhta ehrhta herhta rhehta hrehta hethra ehthra htehra thehra ethhra tehhra hehtra ehhtra hhetra hhetra ehhtra hehtra hthera thhera hhtera hhtera thhera hthera ethhra tehhra ehthra hethra thehra htehra hrthea rhthea htrhea thrhea rthhea trhhea hrhtea rhhtea hhrtea hhrtea rhhtea hrhtea hthrea thhrea hhtrea hhtrea thhrea hthrea rthhea trhhea rhthea hrthea thrhea htrhea erthha rethha etrhha terhha rtehha trehha erhtha rehtha ehrtha hertha rhetha hretha ethrha tehrha ehtrha hetrha therha hterha rtheha trheha rhteha hrteha threha htreha harthe ahrthe hrathe rhathe arhthe rahthe hatrhe ahtrhe htarhe tharhe athrhe tahrhe hrtahe rhtahe htrahe thrahe rthahe trhahe arthhe rathhe atrhhe tarhhe rtahhe trahhe harhte ahrhte hrahte rhahte arhhte rahhte hahrte ahhrte hharte hharte ahhrte hahrte hrhate rhhate hhrate hhrate rhhate hrhate arhhte rahhte ahrhte harhte rhahte hrahte hathre ahthre htahre thahre athhre tahhre hahtre ahhtre hhatre hhatre ahhtre hahtre hthare thhare hhtare hhtare thhare hthare athhre tahhre ahthre hathre thahre htahre hrthae rhthae htrhae thrhae rthhae trhhae hrhtae rhhtae hhrtae hhrtae rhhtae hrhtae hthrae thhrae hhtrae hhtrae thhrae hthrae rthhae trhhae rhthae hrthae thrhae htrhae arthhe rathhe atrhhe tarhhe rtahhe trahhe arhthe rahthe ahrthe harthe rhathe hrathe athrhe tahrhe ahtrhe hatrhe tharhe htarhe rthahe trhahe rhtahe hrtahe thrahe htrahe earthh aerthh erathh reathh arethh raethh eatrhh aetrhh etarhh tearhh aterhh taerhh ertahh retahh etrahh terahh rteahh treahh artehh ratehh atrehh tarehh rtaehh traehh earhth aerhth erahth reahth arehth raehth eahrth aehrth eharth hearth aherth haerth erhath rehath ehrath herath rheath hreath arheth raheth ahreth hareth rhaeth hraeth eathrh aethrh etahrh teahrh atehrh taehrh eahtrh aehtrh ehatrh heatrh ahetrh haetrh etharh teharh ehtarh hetarh thearh htearh atherh taherh ahterh haterh thaerh htaerh erthah rethah etrhah terhah rtehah trehah erhtah rehtah ehrtah hertah rhetah hretah ethrah tehrah ehtrah hetrah therah hterah rtheah trheah rhteah hrteah threah htreah artheh ratheh atrheh tarheh rtaheh traheh arhteh rahteh ahrteh harteh rhateh hrateh athreh tahreh ahtreh hatreh thareh htareh rthaeh trhaeh rhtaeh hrtaeh thraeh htraeh
Note: these 'words' (valid or invalid) are all the permutations of the word hearth. These words are obtained by scrambling the letters in hearth.