fecund efcund fceund cfeund ecfund cefund feucnd efucnd fuecnd ufecnd eufcnd uefcnd fcuend cfuend fucend ufcend cufend ucfend ecufnd ceufnd eucfnd uecfnd cuefnd ucefnd fecnud efcnud fcenud cfenud ecfnud cefnud fencud efncud fnecud nfecud enfcud nefcud fcneud cfneud fnceud nfceud cnfeud ncfeud ecnfud cenfud encfud necfud cnefud ncefud feuncd efuncd fuencd ufencd eufncd uefncd fenucd efnucd fneucd nfeucd enfucd nefucd funecd ufnecd fnuecd nfuecd unfecd nufecd eunfcd uenfcd enufcd neufcd unefcd nuefcd fcuned cfuned fucned ufcned cufned ucfned fcnued cfnued fncued nfcued cnfued ncfued funced ufnced fnuced nfuced unfced nufced cunfed ucnfed cnufed ncufed uncfed nucfed ecunfd ceunfd eucnfd uecnfd cuenfd ucenfd ecnufd cenufd encufd necufd cneufd nceufd euncfd uencfd enucfd neucfd unecfd nuecfd cunefd ucnefd cnuefd ncuefd uncefd nucefd fecudn efcudn fceudn cfeudn ecfudn cefudn feucdn efucdn fuecdn ufecdn eufcdn uefcdn fcuedn cfuedn fucedn ufcedn cufedn ucfedn ecufdn ceufdn eucfdn uecfdn cuefdn ucefdn fecdun efcdun fcedun cfedun ecfdun cefdun fedcun efdcun fdecun dfecun edfcun defcun fcdeun cfdeun fdceun dfceun cdfeun dcfeun ecdfun cedfun edcfun decfun cdefun dcefun feudcn efudcn fuedcn ufedcn eufdcn uefdcn feducn efducn fdeucn dfeucn edfucn defucn fudecn ufdecn fduecn dfuecn udfecn dufecn eudfcn uedfcn edufcn deufcn udefcn duefcn fcuden cfuden fucden ufcden cufden ucfden fcduen cfduen fdcuen dfcuen cdfuen dcfuen fudcen ufdcen fducen dfucen udfcen dufcen cudfen ucdfen cdufen dcufen udcfen ducfen ecudfn ceudfn eucdfn uecdfn cuedfn ucedfn ecdufn cedufn edcufn decufn cdeufn dceufn eudcfn uedcfn educfn deucfn udecfn duecfn cudefn ucdefn cduefn dcuefn udcefn ducefn fecndu efcndu fcendu cfendu ecfndu cefndu fencdu efncdu fnecdu nfecdu enfcdu nefcdu fcnedu cfnedu fncedu nfcedu cnfedu ncfedu ecnfdu cenfdu encfdu necfdu cnefdu ncefdu fecdnu efcdnu fcednu cfednu ecfdnu cefdnu fedcnu efdcnu fdecnu dfecnu edfcnu defcnu fcdenu cfdenu fdcenu dfcenu cdfenu dcfenu ecdfnu cedfnu edcfnu decfnu cdefnu dcefnu fendcu efndcu fnedcu nfedcu enfdcu nefdcu fedncu efdncu fdencu dfencu edfncu defncu fndecu nfdecu fdnecu dfnecu ndfecu dnfecu endfcu nedfcu ednfcu denfcu ndefcu dnefcu fcndeu cfndeu fncdeu nfcdeu cnfdeu ncfdeu fcdneu cfdneu fdcneu dfcneu cdfneu dcfneu fndceu nfdceu fdnceu dfnceu ndfceu dnfceu cndfeu ncdfeu cdnfeu dcnfeu ndcfeu dncfeu ecndfu cendfu encdfu necdfu cnedfu ncedfu ecdnfu cednfu edcnfu decnfu cdenfu dcenfu endcfu nedcfu edncfu dencfu ndecfu dnecfu cndefu ncdefu cdnefu dcnefu ndcefu dncefu feundc efundc fuendc ufendc eufndc uefndc fenudc efnudc fneudc nfeudc enfudc nefudc funedc ufnedc fnuedc nfuedc unfedc nufedc eunfdc uenfdc enufdc neufdc unefdc nuefdc feudnc efudnc fuednc ufednc eufdnc uefdnc fedunc efdunc fdeunc dfeunc edfunc defunc fudenc ufdenc fduenc dfuenc udfenc dufenc eudfnc uedfnc edufnc deufnc udefnc duefnc fenduc efnduc fneduc nfeduc enfduc nefduc fednuc efdnuc fdenuc dfenuc edfnuc defnuc fndeuc nfdeuc fdneuc dfneuc ndfeuc dnfeuc endfuc nedfuc ednfuc denfuc ndefuc dnefuc fundec ufndec fnudec nfudec unfdec nufdec fudnec ufdnec fdunec dfunec udfnec dufnec fnduec nfduec fdnuec dfnuec ndfuec dnfuec undfec nudfec udnfec dunfec ndufec dnufec eundfc uendfc enudfc neudfc unedfc nuedfc eudnfc uednfc edunfc deunfc udenfc duenfc endufc nedufc ednufc denufc ndeufc dneufc undefc nudefc udnefc dunefc nduefc dnuefc fcunde cfunde fucnde ufcnde cufnde ucfnde fcnude cfnude fncude nfcude cnfude ncfude funcde ufncde fnucde nfucde unfcde nufcde cunfde ucnfde cnufde ncufde uncfde nucfde fcudne cfudne fucdne ufcdne cufdne ucfdne fcdune cfdune fdcune dfcune cdfune dcfune fudcne ufdcne fducne dfucne udfcne dufcne cudfne ucdfne cdufne dcufne udcfne ducfne fcndue cfndue fncdue nfcdue cnfdue ncfdue fcdnue cfdnue fdcnue dfcnue cdfnue dcfnue fndcue nfdcue fdncue dfncue ndfcue dnfcue cndfue ncdfue cdnfue dcnfue ndcfue dncfue fundce ufndce fnudce nfudce unfdce nufdce fudnce ufdnce fdunce dfunce udfnce dufnce fnduce nfduce fdnuce dfnuce ndfuce dnfuce undfce nudfce udnfce dunfce ndufce dnufce cundfe ucndfe cnudfe ncudfe uncdfe nucdfe cudnfe ucdnfe cdunfe dcunfe udcnfe ducnfe cndufe ncdufe cdnufe dcnufe ndcufe dncufe undcfe nudcfe udncfe duncfe nducfe dnucfe ecundf ceundf eucndf uecndf cuendf ucendf ecnudf cenudf encudf necudf cneudf nceudf euncdf uencdf enucdf neucdf unecdf nuecdf cunedf ucnedf cnuedf ncuedf uncedf nucedf ecudnf ceudnf eucdnf uecdnf cuednf ucednf ecdunf cedunf edcunf decunf cdeunf dceunf eudcnf uedcnf educnf deucnf udecnf duecnf cudenf ucdenf cduenf dcuenf udcenf ducenf ecnduf cenduf encduf necduf cneduf nceduf ecdnuf cednuf edcnuf decnuf cdenuf dcenuf endcuf nedcuf edncuf dencuf ndecuf dnecuf cndeuf ncdeuf cdneuf dcneuf ndceuf dnceuf eundcf uendcf enudcf neudcf unedcf nuedcf eudncf uedncf eduncf deuncf udencf duencf enducf neducf ednucf denucf ndeucf dneucf undecf nudecf udnecf dunecf nduecf dnuecf cundef ucndef cnudef ncudef uncdef nucdef cudnef ucdnef cdunef dcunef udcnef ducnef cnduef ncduef cdnuef dcnuef ndcuef dncuef undcef nudcef udncef duncef nducef dnucef
Note: these 'words' (valid or invalid) are all the permutations of the word fecund. These words are obtained by scrambling the letters in fecund.