trench rtench ternch etrnch retnch ertnch trnech rtnech tnrech ntrech rntech nrtech tenrch etnrch tnerch nterch entrch netrch rentch erntch rnetch nretch enrtch nertch trecnh rtecnh tercnh etrcnh retcnh ertcnh trcenh rtcenh tcrenh ctrenh rctenh crtenh tecrnh etcrnh tcernh cternh ectrnh cetrnh rectnh erctnh rcetnh cretnh ecrtnh certnh trnceh rtnceh tnrceh ntrceh rntceh nrtceh trcneh rtcneh tcrneh ctrneh rctneh crtneh tncreh ntcreh tcnreh ctnreh nctreh cntreh rncteh nrcteh rcnteh crnteh ncrteh cnrteh tencrh etncrh tnecrh ntecrh entcrh netcrh tecnrh etcnrh tcenrh ctenrh ectnrh cetnrh tncerh ntcerh tcnerh ctnerh ncterh cnterh enctrh nectrh ecntrh centrh ncetrh cnetrh rencth erncth rnecth nrecth enrcth nercth recnth ercnth rcenth crenth ecrnth cernth rnceth nrceth rcneth crneth ncreth cnreth encrth necrth ecnrth cenrth ncerth cnerth trenhc rtenhc ternhc etrnhc retnhc ertnhc trnehc rtnehc tnrehc ntrehc rntehc nrtehc tenrhc etnrhc tnerhc nterhc entrhc netrhc renthc ernthc rnethc nrethc enrthc nerthc trehnc rtehnc terhnc etrhnc rethnc erthnc trhenc rthenc threnc htrenc rhtenc hrtenc tehrnc ethrnc thernc hternc ehtrnc hetrnc rehtnc erhtnc rhetnc hretnc ehrtnc hertnc trnhec rtnhec tnrhec ntrhec rnthec nrthec trhnec rthnec thrnec htrnec rhtnec hrtnec tnhrec nthrec thnrec htnrec nhtrec hntrec rnhtec nrhtec rhntec hrntec nhrtec hnrtec tenhrc etnhrc tnehrc ntehrc enthrc nethrc tehnrc ethnrc thenrc htenrc ehtnrc hetnrc tnherc ntherc thnerc htnerc nhterc hnterc enhtrc nehtrc ehntrc hentrc nhetrc hnetrc renhtc ernhtc rnehtc nrehtc enrhtc nerhtc rehntc erhntc rhentc hrentc ehrntc herntc rnhetc nrhetc rhnetc hrnetc nhretc hnretc enhrtc nehrtc ehnrtc henrtc nhertc hnertc trechn rtechn terchn etrchn retchn ertchn trcehn rtcehn tcrehn ctrehn rctehn crtehn tecrhn etcrhn tcerhn cterhn ectrhn cetrhn recthn ercthn rcethn crethn ecrthn certhn trehcn rtehcn terhcn etrhcn rethcn erthcn trhecn rthecn threcn htrecn rhtecn hrtecn tehrcn ethrcn thercn htercn ehtrcn hetrcn rehtcn erhtcn rhetcn hretcn ehrtcn hertcn trchen rtchen tcrhen ctrhen rcthen crthen trhcen rthcen thrcen htrcen rhtcen hrtcen tchren cthren thcren htcren chtren hctren rchten crhten rhcten hrcten chrten hcrten techrn etchrn tcehrn ctehrn ecthrn cethrn tehcrn ethcrn thecrn htecrn ehtcrn hetcrn tchern cthern thcern htcern chtern hctern echtrn cehtrn ehctrn hectrn chetrn hcetrn rechtn erchtn rcehtn crehtn ecrhtn cerhtn rehctn erhctn rhectn hrectn ehrctn herctn rchetn crhetn rhcetn hrcetn chretn hcretn echrtn cehrtn ehcrtn hecrtn chertn hcertn trnche rtnche tnrche ntrche rntche nrtche trcnhe rtcnhe tcrnhe ctrnhe rctnhe crtnhe tncrhe ntcrhe tcnrhe ctnrhe nctrhe cntrhe rncthe nrcthe rcnthe crnthe ncrthe cnrthe trnhce rtnhce tnrhce ntrhce rnthce nrthce trhnce rthnce thrnce htrnce rhtnce hrtnce tnhrce nthrce thnrce htnrce nhtrce hntrce rnhtce nrhtce rhntce hrntce nhrtce hnrtce trchne rtchne tcrhne ctrhne rcthne crthne trhcne rthcne thrcne htrcne rhtcne hrtcne tchrne cthrne thcrne htcrne chtrne hctrne rchtne crhtne rhctne hrctne chrtne hcrtne tnchre ntchre tcnhre ctnhre ncthre cnthre tnhcre nthcre thncre htncre nhtcre hntcre tchnre cthnre thcnre htcnre chtnre hctnre nchtre cnhtre nhctre hnctre chntre hcntre rnchte nrchte rcnhte crnhte ncrhte cnrhte rnhcte nrhcte rhncte hrncte nhrcte hnrcte rchnte crhnte rhcnte hrcnte chrnte hcrnte nchrte cnhrte nhcrte hncrte chnrte hcnrte tenchr etnchr tnechr ntechr entchr netchr tecnhr etcnhr tcenhr ctenhr ectnhr cetnhr tncehr ntcehr tcnehr ctnehr nctehr cntehr encthr necthr ecnthr centhr ncethr cnethr tenhcr etnhcr tnehcr ntehcr enthcr nethcr tehncr ethncr thencr htencr ehtncr hetncr tnhecr nthecr thnecr htnecr nhtecr hntecr enhtcr nehtcr ehntcr hentcr nhetcr hnetcr technr etchnr tcehnr ctehnr ecthnr cethnr tehcnr ethcnr thecnr htecnr ehtcnr hetcnr tchenr cthenr thcenr htcenr chtenr hctenr echtnr cehtnr ehctnr hectnr chetnr hcetnr tncher ntcher tcnher ctnher ncther cnther tnhcer nthcer thncer htncer nhtcer hntcer tchner cthner thcner htcner chtner hctner nchter cnhter nhcter hncter chnter hcnter enchtr nechtr ecnhtr cenhtr ncehtr cnehtr enhctr nehctr ehnctr henctr nhectr hnectr echntr cehntr ehcntr hecntr chentr hcentr nchetr cnhetr nhcetr hncetr chnetr hcnetr rencht erncht rnecht nrecht enrcht nercht recnht ercnht rcenht crenht ecrnht cernht rnceht nrceht rcneht crneht ncreht cnreht encrht necrht ecnrht cenrht ncerht cnerht renhct ernhct rnehct nrehct enrhct nerhct rehnct erhnct rhenct hrenct ehrnct hernct rnhect nrhect rhnect hrnect nhrect hnrect enhrct nehrct ehnrct henrct nherct hnerct rechnt erchnt rcehnt crehnt ecrhnt cerhnt rehcnt erhcnt rhecnt hrecnt ehrcnt hercnt rchent crhent rhcent hrcent chrent hcrent echrnt cehrnt ehcrnt hecrnt chernt hcernt rnchet nrchet rcnhet crnhet ncrhet cnrhet rnhcet nrhcet rhncet hrncet nhrcet hnrcet rchnet crhnet rhcnet hrcnet chrnet hcrnet nchret cnhret nhcret hncret chnret hcnret enchrt nechrt ecnhrt cenhrt ncehrt cnehrt enhcrt nehcrt ehncrt hencrt nhecrt hnecrt echnrt cehnrt ehcnrt hecnrt chenrt hcenrt nchert cnhert nhcert hncert chnert hcnert
Note: these 'words' (valid or invalid) are all the permutations of the word trench. These words are obtained by scrambling the letters in trench.