trapen rtapen tarpen atrpen ratpen artpen trpaen rtpaen tpraen ptraen rptaen prtaen tapren atpren tparen ptaren aptren patren rapten arpten rpaten praten aprten parten traepn rtaepn tarepn atrepn ratepn artepn treapn rteapn terapn etrapn retapn ertapn taerpn aterpn tearpn etarpn aetrpn eatrpn raetpn aretpn reatpn eratpn aertpn eartpn trpean rtpean tprean ptrean rptean prtean trepan rtepan terpan etrpan retpan ertpan tperan pteran tepran etpran petran eptran rpetan pretan reptan erptan pertan eprtan tapern atpern tpaern ptaern aptern patern taeprn ateprn teaprn etaprn aetprn eatprn tpearn ptearn teparn etparn petarn eptarn apetrn paetrn aeptrn eaptrn peatrn epatrn rapetn arpetn rpaetn praetn apretn paretn raeptn areptn reaptn eraptn aerptn earptn rpeatn preatn repatn erpatn peratn epratn apertn paertn aeprtn eaprtn peartn epartn trapne rtapne tarpne atrpne ratpne artpne trpane rtpane tprane ptrane rptane prtane taprne atprne tparne ptarne aptrne patrne raptne arptne rpatne pratne aprtne partne tranpe rtanpe tarnpe atrnpe ratnpe artnpe trnape rtnape tnrape ntrape rntape nrtape tanrpe atnrpe tnarpe ntarpe antrpe natrpe rantpe arntpe rnatpe nratpe anrtpe nartpe trpnae rtpnae tprnae ptrnae rptnae prtnae trnpae rtnpae tnrpae ntrpae rntpae nrtpae tpnrae ptnrae tnprae ntprae pntrae nptrae rpntae prntae rnptae nrptae pnrtae nprtae tapnre atpnre tpanre ptanre aptnre patnre tanpre atnpre tnapre ntapre antpre natpre tpnare ptnare tnpare ntpare pntare nptare apntre pantre anptre naptre pnatre npatre rapnte arpnte rpante prante aprnte parnte ranpte arnpte rnapte nrapte anrpte narpte rpnate prnate rnpate nrpate pnrate nprate apnrte panrte anprte naprte pnarte nparte traenp rtaenp tarenp atrenp ratenp artenp treanp rteanp teranp etranp retanp ertanp taernp aternp tearnp etarnp aetrnp eatrnp raetnp aretnp reatnp eratnp aertnp eartnp tranep rtanep tarnep atrnep ratnep artnep trnaep rtnaep tnraep ntraep rntaep nrtaep tanrep atnrep tnarep ntarep antrep natrep rantep arntep rnatep nratep anrtep nartep trenap rtenap ternap etrnap retnap ertnap trneap rtneap tnreap ntreap rnteap nrteap tenrap etnrap tnerap nterap entrap netrap rentap erntap rnetap nretap enrtap nertap taenrp atenrp teanrp etanrp aetnrp eatnrp tanerp atnerp tnaerp ntaerp anterp naterp tenarp etnarp tnearp ntearp entarp netarp aentrp eantrp anetrp naetrp enatrp neatrp raentp arentp reantp erantp aerntp earntp ranetp arnetp rnaetp nraetp anretp naretp renatp ernatp rneatp nreatp enratp neratp aenrtp eanrtp anertp naertp enartp neartp trpena rtpena tprena ptrena rptena prtena trepna rtepna terpna etrpna retpna ertpna tperna pterna teprna etprna petrna eptrna rpetna pretna reptna erptna pertna eprtna trpnea rtpnea tprnea ptrnea rptnea prtnea trnpea rtnpea tnrpea ntrpea rntpea nrtpea tpnrea ptnrea tnprea ntprea pntrea nptrea rpntea prntea rnptea nrptea pnrtea nprtea trenpa rtenpa ternpa etrnpa retnpa ertnpa trnepa rtnepa tnrepa ntrepa rntepa nrtepa tenrpa etnrpa tnerpa nterpa entrpa netrpa rentpa erntpa rnetpa nretpa enrtpa nertpa tpenra ptenra tepnra etpnra petnra eptnra tpnera ptnera tnpera ntpera pntera nptera tenpra etnpra tnepra ntepra entpra netpra pentra epntra pnetra npetra enptra neptra rpenta prenta repnta erpnta pernta eprnta rpneta prneta rnpeta nrpeta pnreta npreta renpta ernpta rnepta nrepta enrpta nerpta penrta epnrta pnerta nperta enprta neprta tapenr atpenr tpaenr ptaenr aptenr patenr taepnr atepnr teapnr etapnr aetpnr eatpnr tpeanr pteanr tepanr etpanr petanr eptanr apetnr paetnr aeptnr eaptnr peatnr epatnr tapner atpner tpaner ptaner aptner patner tanper atnper tnaper ntaper antper natper tpnaer ptnaer tnpaer ntpaer pntaer nptaer apnter panter anpter napter pnater npater taenpr atenpr teanpr etanpr aetnpr eatnpr tanepr atnepr tnaepr ntaepr antepr natepr tenapr etnapr tneapr nteapr entapr netapr aentpr eantpr anetpr naetpr enatpr neatpr tpenar ptenar tepnar etpnar petnar eptnar tpnear ptnear tnpear ntpear pntear nptear tenpar etnpar tnepar ntepar entpar netpar pentar epntar pnetar npetar enptar neptar apentr paentr aepntr eapntr peantr epantr apnetr panetr anpetr napetr pnaetr npaetr aenptr eanptr aneptr naeptr enaptr neaptr penatr epnatr pneatr npeatr enpatr nepatr rapent arpent rpaent praent aprent parent raepnt arepnt reapnt erapnt aerpnt earpnt rpeant preant repant erpant perant eprant apernt paernt aeprnt eaprnt pearnt eparnt rapnet arpnet rpanet pranet aprnet parnet ranpet arnpet rnapet nrapet anrpet narpet rpnaet prnaet rnpaet nrpaet pnraet npraet apnret panret anpret napret pnaret nparet raenpt arenpt reanpt eranpt aernpt earnpt ranept arnept rnaept nraept anrept narept renapt ernapt rneapt nreapt enrapt nerapt aenrpt eanrpt anerpt naerpt enarpt nearpt rpenat prenat repnat erpnat pernat eprnat rpneat prneat rnpeat nrpeat pnreat npreat renpat ernpat rnepat nrepat enrpat nerpat penrat epnrat pnerat nperat enprat neprat apenrt paenrt aepnrt eapnrt peanrt epanrt apnert panert anpert napert pnaert npaert aenprt eanprt aneprt naeprt enaprt neaprt penart epnart pneart npeart enpart nepart
Note: these 'words' (valid or invalid) are all the permutations of the word trapen. These words are obtained by scrambling the letters in trapen.