trepid rtepid terpid etrpid retpid ertpid trpeid rtpeid tpreid ptreid rpteid prteid teprid etprid tperid pterid eptrid petrid reptid erptid rpetid pretid eprtid pertid treipd rteipd teripd etripd retipd ertipd triepd rtiepd tirepd itrepd ritepd irtepd teirpd etirpd tierpd iterpd eitrpd ietrpd reitpd eritpd rietpd iretpd eirtpd iertpd trpied rtpied tpried ptried rptied prtied triped rtiped tirped itrped ritped irtped tpired ptired tipred itpred pitred iptred rpited prited ripted irpted pirted iprted tepird etpird tpeird pteird eptird petird teiprd etiprd tieprd iteprd eitprd ietprd tpierd ptierd tiperd itperd piterd ipterd epitrd peitrd eiptrd ieptrd pietrd ipetrd repitd erpitd rpeitd preitd epritd peritd reiptd eriptd rieptd ireptd eirptd ierptd rpietd prietd ripetd irpetd piretd ipretd epirtd peirtd eiprtd ieprtd piertd ipertd trepdi rtepdi terpdi etrpdi retpdi ertpdi trpedi rtpedi tpredi ptredi rptedi prtedi teprdi etprdi tperdi pterdi eptrdi petrdi reptdi erptdi rpetdi pretdi eprtdi pertdi tredpi rtedpi terdpi etrdpi retdpi ertdpi trdepi rtdepi tdrepi dtrepi rdtepi drtepi tedrpi etdrpi tderpi dterpi edtrpi detrpi redtpi erdtpi rdetpi dretpi edrtpi dertpi trpdei rtpdei tprdei ptrdei rptdei prtdei trdpei rtdpei tdrpei dtrpei rdtpei drtpei tpdrei ptdrei tdprei dtprei pdtrei dptrei rpdtei prdtei rdptei drptei pdrtei dprtei tepdri etpdri tpedri ptedri eptdri petdri tedpri etdpri tdepri dtepri edtpri detpri tpderi ptderi tdperi dtperi pdteri dpteri epdtri pedtri edptri deptri pdetri dpetri repdti erpdti rpedti predti eprdti perdti redpti erdpti rdepti drepti edrpti derpti rpdeti prdeti rdpeti drpeti pdreti dpreti epdrti pedrti edprti deprti pderti dperti treidp rteidp teridp etridp retidp ertidp triedp rtiedp tiredp itredp ritedp irtedp teirdp etirdp tierdp iterdp eitrdp ietrdp reitdp eritdp rietdp iretdp eirtdp iertdp tredip rtedip terdip etrdip retdip ertdip trdeip rtdeip tdreip dtreip rdteip drteip tedrip etdrip tderip dterip edtrip detrip redtip erdtip rdetip dretip edrtip dertip tridep rtidep tirdep itrdep ritdep irtdep trdiep rtdiep tdriep dtriep rdtiep drtiep tidrep itdrep tdirep dtirep idtrep ditrep ridtep irdtep rditep dritep idrtep dirtep teidrp etidrp tiedrp itedrp eitdrp ietdrp tedirp etdirp tdeirp dteirp edtirp detirp tiderp itderp tdierp dtierp idterp diterp eidtrp iedtrp editrp deitrp idetrp dietrp reidtp eridtp riedtp iredtp eirdtp ierdtp reditp erditp rdeitp dreitp edritp deritp ridetp irdetp rdietp drietp idretp diretp eidrtp iedrtp edirtp deirtp idertp diertp trpide rtpide tpride ptride rptide prtide tripde rtipde tirpde itrpde ritpde irtpde tpirde ptirde tiprde itprde pitrde iptrde rpitde pritde riptde irptde pirtde iprtde trpdie rtpdie tprdie ptrdie rptdie prtdie trdpie rtdpie tdrpie dtrpie rdtpie drtpie tpdrie ptdrie tdprie dtprie pdtrie dptrie rpdtie prdtie rdptie drptie pdrtie dprtie tridpe rtidpe tirdpe itrdpe ritdpe irtdpe trdipe rtdipe tdripe dtripe rdtipe drtipe tidrpe itdrpe tdirpe dtirpe idtrpe ditrpe ridtpe irdtpe rditpe dritpe idrtpe dirtpe tpidre ptidre tipdre itpdre pitdre iptdre tpdire ptdire tdpire dtpire pdtire dptire tidpre itdpre tdipre dtipre idtpre ditpre pidtre ipdtre pditre dpitre idptre diptre rpidte pridte ripdte irpdte pirdte iprdte rpdite prdite rdpite drpite pdrite dprite ridpte irdpte rdipte dripte idrpte dirpte pidrte ipdrte pdirte dpirte idprte diprte tepidr etpidr tpeidr pteidr eptidr petidr teipdr etipdr tiepdr itepdr eitpdr ietpdr tpiedr ptiedr tipedr itpedr pitedr iptedr epitdr peitdr eiptdr ieptdr pietdr ipetdr tepdir etpdir tpedir ptedir eptdir petdir tedpir etdpir tdepir dtepir edtpir detpir tpdeir ptdeir tdpeir dtpeir pdteir dpteir epdtir pedtir edptir deptir pdetir dpetir teidpr etidpr tiedpr itedpr eitdpr ietdpr tedipr etdipr tdeipr dteipr edtipr detipr tidepr itdepr tdiepr dtiepr idtepr ditepr eidtpr iedtpr editpr deitpr idetpr dietpr tpider ptider tipder itpder pitder iptder tpdier ptdier tdpier dtpier pdtier dptier tidper itdper tdiper dtiper idtper ditper pidter ipdter pditer dpiter idpter dipter epidtr peidtr eipdtr iepdtr piedtr ipedtr epditr peditr edpitr depitr pdeitr dpeitr eidptr iedptr ediptr deiptr ideptr dieptr pidetr ipdetr pdietr dpietr idpetr dipetr repidt erpidt rpeidt preidt epridt peridt reipdt eripdt riepdt irepdt eirpdt ierpdt rpiedt priedt ripedt irpedt piredt ipredt epirdt peirdt eiprdt ieprdt pierdt iperdt repdit erpdit rpedit predit eprdit perdit redpit erdpit rdepit drepit edrpit derpit rpdeit prdeit rdpeit drpeit pdreit dpreit epdrit pedrit edprit deprit pderit dperit reidpt eridpt riedpt iredpt eirdpt ierdpt redipt erdipt rdeipt dreipt edript deript ridept irdept rdiept driept idrept dirept eidrpt iedrpt edirpt deirpt iderpt dierpt rpidet pridet ripdet irpdet pirdet iprdet rpdiet prdiet rdpiet drpiet pdriet dpriet ridpet irdpet rdipet dripet idrpet dirpet pidret ipdret pdiret dpiret idpret dipret epidrt peidrt eipdrt iepdrt piedrt ipedrt epdirt pedirt edpirt depirt pdeirt dpeirt eidprt iedprt ediprt deiprt ideprt dieprt pidert ipdert pdiert dpiert idpert dipert
Note: these 'words' (valid or invalid) are all the permutations of the word trepid. These words are obtained by scrambling the letters in trepid.