nerval enrval nreval rneval ernval renval nevral envral nveral vneral evnral venral nrveal rnveal nvreal vnreal rvneal vrneal ervnal revnal evrnal vernal rvenal vrenal neravl enravl nreavl rneavl ernavl renavl nearvl enarvl naervl anervl eanrvl aenrvl nraevl rnaevl narevl anrevl ranevl arnevl eranvl reanvl earnvl aernvl raenvl arenvl nevarl envarl nvearl vnearl evnarl venarl neavrl enavrl naevrl anevrl eanvrl aenvrl nvaerl vnaerl naverl anverl vanerl avnerl evanrl veanrl eavnrl aevnrl vaenrl avenrl nrvael rnvael nvrael vnrael rvnael vrnael nravel rnavel narvel anrvel ranvel arnvel nvarel vnarel navrel anvrel vanrel avnrel rvanel vranel ravnel arvnel varnel avrnel ervanl revanl evranl veranl rveanl vreanl eravnl reavnl earvnl aervnl raevnl arevnl evarnl vearnl eavrnl aevrnl vaernl avernl rvaenl vraenl ravenl arvenl varenl avrenl nervla enrvla nrevla rnevla ernvla renvla nevrla envrla nverla vnerla evnrla venrla nrvela rnvela nvrela vnrela rvnela vrnela ervnla revnla evrnla vernla rvenla vrenla nerlva enrlva nrelva rnelva ernlva renlva nelrva enlrva nlerva lnerva elnrva lenrva nrleva rnleva nlreva lnreva rlneva lrneva erlnva relnva elrnva lernva rlenva lrenva nevlra envlra nvelra vnelra evnlra venlra nelvra enlvra nlevra lnevra elnvra lenvra nvlera vnlera nlvera lnvera vlnera lvnera evlnra velnra elvnra levnra vlenra lvenra nrvlea rnvlea nvrlea vnrlea rvnlea vrnlea nrlvea rnlvea nlrvea lnrvea rlnvea lrnvea nvlrea vnlrea nlvrea lnvrea vlnrea lvnrea rvlnea vrlnea rlvnea lrvnea vlrnea lvrnea ervlna revlna evrlna verlna rvelna vrelna erlvna relvna elrvna lervna rlevna lrevna evlrna velrna elvrna levrna vlerna lverna rvlena vrlena rlvena lrvena vlrena lvrena neralv enralv nrealv rnealv ernalv renalv nearlv enarlv naerlv anerlv eanrlv aenrlv nraelv rnaelv narelv anrelv ranelv arnelv eranlv reanlv earnlv aernlv raenlv arenlv nerlav enrlav nrelav rnelav ernlav renlav nelrav enlrav nlerav lnerav elnrav lenrav nrleav rnleav nlreav lnreav rlneav lrneav erlnav relnav elrnav lernav rlenav lrenav nealrv enalrv naelrv anelrv eanlrv aenlrv nelarv enlarv nlearv lnearv elnarv lenarv nalerv anlerv nlaerv lnaerv alnerv lanerv ealnrv aelnrv elanrv leanrv alenrv laenrv nralev rnalev narlev anrlev ranlev arnlev nrlaev rnlaev nlraev lnraev rlnaev lrnaev nalrev anlrev nlarev lnarev alnrev lanrev ralnev arlnev rlanev lranev alrnev larnev eralnv realnv earlnv aerlnv raelnv arelnv erlanv relanv elranv leranv rleanv lreanv ealrnv aelrnv elarnv learnv alernv laernv ralenv arlenv rlaenv lraenv alrenv larenv nevalr envalr nvealr vnealr evnalr venalr neavlr enavlr naevlr anevlr eanvlr aenvlr nvaelr vnaelr navelr anvelr vanelr avnelr evanlr veanlr eavnlr aevnlr vaenlr avenlr nevlar envlar nvelar vnelar evnlar venlar nelvar enlvar nlevar lnevar elnvar lenvar nvlear vnlear nlvear lnvear vlnear lvnear evlnar velnar elvnar levnar vlenar lvenar nealvr enalvr naelvr anelvr eanlvr aenlvr nelavr enlavr nleavr lneavr elnavr lenavr nalevr anlevr nlaevr lnaevr alnevr lanevr ealnvr aelnvr elanvr leanvr alenvr laenvr nvaler vnaler navler anvler vanler avnler nvlaer vnlaer nlvaer lnvaer vlnaer lvnaer nalver anlver nlaver lnaver alnver lanver valner avlner vlaner lvaner alvner lavner evalnr vealnr eavlnr aevlnr vaelnr avelnr evlanr velanr elvanr levanr vleanr lveanr ealvnr aelvnr elavnr leavnr alevnr laevnr valenr avlenr vlaenr lvaenr alvenr lavenr nrvale rnvale nvrale vnrale rvnale vrnale nravle rnavle narvle anrvle ranvle arnvle nvarle vnarle navrle anvrle vanrle avnrle rvanle vranle ravnle arvnle varnle avrnle nrvlae rnvlae nvrlae vnrlae rvnlae vrnlae nrlvae rnlvae nlrvae lnrvae rlnvae lrnvae nvlrae vnlrae nlvrae lnvrae vlnrae lvnrae rvlnae vrlnae rlvnae lrvnae vlrnae lvrnae nralve rnalve narlve anrlve ranlve arnlve nrlave rnlave nlrave lnrave rlnave lrnave nalrve anlrve nlarve lnarve alnrve lanrve ralnve arlnve rlanve lranve alrnve larnve nvalre vnalre navlre anvlre vanlre avnlre nvlare vnlare nlvare lnvare vlnare lvnare nalvre anlvre nlavre lnavre alnvre lanvre valnre avlnre vlanre lvanre alvnre lavnre rvalne vralne ravlne arvlne varlne avrlne rvlane vrlane rlvane lrvane vlrane lvrane ralvne arlvne rlavne lravne alrvne larvne valrne avlrne vlarne lvarne alvrne lavrne ervaln revaln evraln veraln rvealn vrealn eravln reavln earvln aervln raevln arevln evarln vearln eavrln aevrln vaerln averln rvaeln vraeln raveln arveln vareln avreln ervlan revlan evrlan verlan rvelan vrelan erlvan relvan elrvan lervan rlevan lrevan evlran velran elvran levran vleran lveran rvlean vrlean rlvean lrvean vlrean lvrean eralvn realvn earlvn aerlvn raelvn arelvn erlavn relavn elravn leravn rleavn lreavn ealrvn aelrvn elarvn learvn alervn laervn ralevn arlevn rlaevn lraevn alrevn larevn evalrn vealrn eavlrn aevlrn vaelrn avelrn evlarn velarn elvarn levarn vlearn lvearn ealvrn aelvrn elavrn leavrn alevrn laevrn valern avlern vlaern lvaern alvern lavern rvalen vralen ravlen arvlen varlen avrlen rvlaen vrlaen rlvaen lrvaen vlraen lvraen ralven arlven rlaven lraven alrven larven valren avlren vlaren lvaren alvren lavren
Note: these 'words' (valid or invalid) are all the permutations of the word nerval. These words are obtained by scrambling the letters in nerval.