rappen arppen rpapen prapen aprpen parpen rappen arppen rpapen prapen aprpen parpen rppaen prpaen rppaen prpaen ppraen ppraen appren papren appren papren pparen pparen rapepn arpepn rpaepn praepn aprepn parepn raeppn areppn reappn erappn aerppn earppn rpeapn preapn repapn erpapn perapn eprapn aperpn paerpn aeprpn eaprpn pearpn eparpn rapepn arpepn rpaepn praepn aprepn parepn raeppn areppn reappn erappn aerppn earppn rpeapn preapn repapn erpapn perapn eprapn aperpn paerpn aeprpn eaprpn pearpn eparpn rppean prpean rppean prpean pprean pprean rpepan prepan reppan erppan perpan eprpan rpepan prepan reppan erppan perpan eprpan pperan pperan pepran eppran pepran eppran appern papern appern papern ppaern ppaern apeprn paeprn aepprn eapprn peaprn epaprn apeprn paeprn aepprn eapprn peaprn epaprn ppearn ppearn peparn epparn peparn epparn rappne arppne rpapne prapne aprpne parpne rappne arppne rpapne prapne aprpne parpne rppane prpane rppane prpane pprane pprane apprne paprne apprne paprne pparne pparne rapnpe arpnpe rpanpe pranpe aprnpe parnpe ranppe arnppe rnappe nrappe anrppe narppe rpnape prnape rnpape nrpape pnrape nprape apnrpe panrpe anprpe naprpe pnarpe nparpe rapnpe arpnpe rpanpe pranpe aprnpe parnpe ranppe arnppe rnappe nrappe anrppe narppe rpnape prnape rnpape nrpape pnrape nprape apnrpe panrpe anprpe naprpe pnarpe nparpe rppnae prpnae rppnae prpnae pprnae pprnae rpnpae prnpae rnppae nrppae pnrpae nprpae rpnpae prnpae rnppae nrppae pnrpae nprpae ppnrae ppnrae pnprae npprae pnprae npprae appnre papnre appnre papnre ppanre ppanre apnpre panpre anppre nappre pnapre npapre apnpre panpre anppre nappre pnapre npapre ppnare ppnare pnpare nppare pnpare nppare rapenp arpenp rpaenp praenp aprenp parenp raepnp arepnp reapnp erapnp aerpnp earpnp rpeanp preanp repanp erpanp peranp epranp apernp paernp aeprnp eaprnp pearnp eparnp rapnep arpnep rpanep pranep aprnep parnep ranpep arnpep rnapep nrapep anrpep narpep rpnaep prnaep rnpaep nrpaep pnraep npraep apnrep panrep anprep naprep pnarep nparep raenpp arenpp reanpp eranpp aernpp earnpp ranepp arnepp rnaepp nraepp anrepp narepp renapp ernapp rneapp nreapp enrapp nerapp aenrpp eanrpp anerpp naerpp enarpp nearpp rpenap prenap repnap erpnap pernap eprnap rpneap prneap rnpeap nrpeap pnreap npreap renpap ernpap rnepap nrepap enrpap nerpap penrap epnrap pnerap nperap enprap neprap apenrp paenrp aepnrp eapnrp peanrp epanrp apnerp panerp anperp naperp pnaerp npaerp aenprp eanprp aneprp naeprp enaprp neaprp penarp epnarp pnearp npearp enparp neparp rapenp arpenp rpaenp praenp aprenp parenp raepnp arepnp reapnp erapnp aerpnp earpnp rpeanp preanp repanp erpanp peranp epranp apernp paernp aeprnp eaprnp pearnp eparnp rapnep arpnep rpanep pranep aprnep parnep ranpep arnpep rnapep nrapep anrpep narpep rpnaep prnaep rnpaep nrpaep pnraep npraep apnrep panrep anprep naprep pnarep nparep raenpp arenpp reanpp eranpp aernpp earnpp ranepp arnepp rnaepp nraepp anrepp narepp renapp ernapp rneapp nreapp enrapp nerapp aenrpp eanrpp anerpp naerpp enarpp nearpp rpenap prenap repnap erpnap pernap eprnap rpneap prneap rnpeap nrpeap pnreap npreap renpap ernpap rnepap nrepap enrpap nerpap penrap epnrap pnerap nperap enprap neprap apenrp paenrp aepnrp eapnrp peanrp epanrp apnerp panerp anperp naperp pnaerp npaerp aenprp eanprp aneprp naeprp enaprp neaprp penarp epnarp pnearp npearp enparp neparp rppena prpena rppena prpena pprena pprena rpepna prepna reppna erppna perpna eprpna rpepna prepna reppna erppna perpna eprpna pperna pperna peprna epprna peprna epprna rppnea prpnea rppnea prpnea pprnea pprnea rpnpea prnpea rnppea nrppea pnrpea nprpea rpnpea prnpea rnppea nrppea pnrpea nprpea ppnrea ppnrea pnprea npprea pnprea npprea rpenpa prenpa repnpa erpnpa pernpa eprnpa rpnepa prnepa rnpepa nrpepa pnrepa nprepa renppa ernppa rneppa nreppa enrppa nerppa penrpa epnrpa pnerpa nperpa enprpa neprpa rpenpa prenpa repnpa erpnpa pernpa eprnpa rpnepa prnepa rnpepa nrpepa pnrepa nprepa renppa ernppa rneppa nreppa enrppa nerppa penrpa epnrpa pnerpa nperpa enprpa neprpa ppenra ppenra pepnra eppnra pepnra eppnra ppnera ppnera pnpera nppera pnpera nppera penpra epnpra pnepra npepra enppra neppra penpra epnpra pnepra npepra enppra neppra appenr papenr appenr papenr ppaenr ppaenr apepnr paepnr aeppnr eappnr peapnr epapnr apepnr paepnr aeppnr eappnr peapnr epapnr ppeanr ppeanr pepanr eppanr pepanr eppanr appner papner appner papner ppaner ppaner apnper panper anpper napper pnaper npaper apnper panper anpper napper pnaper npaper ppnaer ppnaer pnpaer nppaer pnpaer nppaer apenpr paenpr aepnpr eapnpr peanpr epanpr apnepr panepr anpepr napepr pnaepr npaepr aenppr eanppr aneppr naeppr enappr neappr penapr epnapr pneapr npeapr enpapr nepapr apenpr paenpr aepnpr eapnpr peanpr epanpr apnepr panepr anpepr napepr pnaepr npaepr aenppr eanppr aneppr naeppr enappr neappr penapr epnapr pneapr npeapr enpapr nepapr ppenar ppenar pepnar eppnar pepnar eppnar ppnear ppnear pnpear nppear pnpear nppear penpar epnpar pnepar npepar enppar neppar penpar epnpar pnepar npepar enppar neppar
Note: these 'words' (valid or invalid) are all the permutations of the word rappen. These words are obtained by scrambling the letters in rappen.