flavin lfavin falvin aflvin lafvin alfvin flvain lfvain fvlain vflain lvfain vlfain favlin afvlin fvalin vfalin avflin vaflin lavfin alvfin lvafin vlafin avlfin valfin flaivn lfaivn falivn aflivn lafivn alfivn fliavn lfiavn filavn iflavn lifavn ilfavn failvn afilvn fialvn ifalvn aiflvn iaflvn laifvn alifvn liafvn ilafvn ailfvn ialfvn flvian lfvian fvlian vflian lvfian vlfian flivan lfivan filvan iflvan lifvan ilfvan fvilan vfilan fivlan ifvlan viflan ivflan lvifan vlifan livfan ilvfan vilfan ivlfan faviln afviln fvailn vfailn avfiln vafiln faivln afivln fiavln ifavln aifvln iafvln fvialn vfialn fivaln ifvaln vifaln ivfaln avifln vaifln aivfln iavfln viafln ivafln lavifn alvifn lvaifn vlaifn avlifn valifn laivfn alivfn liavfn ilavfn ailvfn ialvfn lviafn vliafn livafn ilvafn vilafn ivlafn avilfn vailfn aivlfn iavlfn vialfn ivalfn flavni lfavni falvni aflvni lafvni alfvni flvani lfvani fvlani vflani lvfani vlfani favlni afvlni fvalni vfalni avflni vaflni lavfni alvfni lvafni vlafni avlfni valfni flanvi lfanvi falnvi aflnvi lafnvi alfnvi flnavi lfnavi fnlavi nflavi lnfavi nlfavi fanlvi afnlvi fnalvi nfalvi anflvi naflvi lanfvi alnfvi lnafvi nlafvi anlfvi nalfvi flvnai lfvnai fvlnai vflnai lvfnai vlfnai flnvai lfnvai fnlvai nflvai lnfvai nlfvai fvnlai vfnlai fnvlai nfvlai vnflai nvflai lvnfai vlnfai lnvfai nlvfai vnlfai nvlfai favnli afvnli fvanli vfanli avfnli vafnli fanvli afnvli fnavli nfavli anfvli nafvli fvnali vfnali fnvali nfvali vnfali nvfali avnfli vanfli anvfli navfli vnafli nvafli lavnfi alvnfi lvanfi vlanfi avlnfi valnfi lanvfi alnvfi lnavfi nlavfi anlvfi nalvfi lvnafi vlnafi lnvafi nlvafi vnlafi nvlafi avnlfi vanlfi anvlfi navlfi vnalfi nvalfi flainv lfainv falinv aflinv lafinv alfinv flianv lfianv filanv iflanv lifanv ilfanv failnv afilnv fialnv ifalnv aiflnv iaflnv laifnv alifnv liafnv ilafnv ailfnv ialfnv flaniv lfaniv falniv aflniv lafniv alfniv flnaiv lfnaiv fnlaiv nflaiv lnfaiv nlfaiv fanliv afnliv fnaliv nfaliv anfliv nafliv lanfiv alnfiv lnafiv nlafiv anlfiv nalfiv flinav lfinav filnav iflnav lifnav ilfnav flniav lfniav fnliav nfliav lnfiav nlfiav finlav ifnlav fnilav nfilav inflav niflav linfav ilnfav lnifav nlifav inlfav nilfav fainlv afinlv fianlv ifanlv aifnlv iafnlv fanilv afnilv fnailv nfailv anfilv nafilv finalv ifnalv fnialv nfialv infalv nifalv ainflv ianflv aniflv naiflv inaflv niaflv lainfv alinfv lianfv ilanfv ailnfv ialnfv lanifv alnifv lnaifv nlaifv anlifv nalifv linafv ilnafv lniafv nliafv inlafv nilafv ainlfv ianlfv anilfv nailfv inalfv nialfv flvina lfvina fvlina vflina lvfina vlfina flivna lfivna filvna iflvna lifvna ilfvna fvilna vfilna fivlna ifvlna viflna ivflna lvifna vlifna livfna ilvfna vilfna ivlfna flvnia lfvnia fvlnia vflnia lvfnia vlfnia flnvia lfnvia fnlvia nflvia lnfvia nlfvia fvnlia vfnlia fnvlia nfvlia vnflia nvflia lvnfia vlnfia lnvfia nlvfia vnlfia nvlfia flinva lfinva filnva iflnva lifnva ilfnva flniva lfniva fnliva nfliva lnfiva nlfiva finlva ifnlva fnilva nfilva inflva niflva linfva ilnfva lnifva nlifva inlfva nilfva fvinla vfinla fivnla ifvnla vifnla ivfnla fvnila vfnila fnvila nfvila vnfila nvfila finvla ifnvla fnivla nfivla infvla nifvla vinfla ivnfla vnifla nvifla invfla nivfla lvinfa vlinfa livnfa ilvnfa vilnfa ivlnfa lvnifa vlnifa lnvifa nlvifa vnlifa nvlifa linvfa ilnvfa lnivfa nlivfa inlvfa nilvfa vinlfa ivnlfa vnilfa nvilfa invlfa nivlfa favinl afvinl fvainl vfainl avfinl vafinl faivnl afivnl fiavnl ifavnl aifvnl iafvnl fvianl vfianl fivanl ifvanl vifanl ivfanl avifnl vaifnl aivfnl iavfnl viafnl ivafnl favnil afvnil fvanil vfanil avfnil vafnil fanvil afnvil fnavil nfavil anfvil nafvil fvnail vfnail fnvail nfvail vnfail nvfail avnfil vanfil anvfil navfil vnafil nvafil fainvl afinvl fianvl ifanvl aifnvl iafnvl fanivl afnivl fnaivl nfaivl anfivl nafivl finavl ifnavl fniavl nfiavl infavl nifavl ainfvl ianfvl anifvl naifvl inafvl niafvl fvinal vfinal fivnal ifvnal vifnal ivfnal fvnial vfnial fnvial nfvial vnfial nvfial finval ifnval fnival nfival infval nifval vinfal ivnfal vnifal nvifal invfal nivfal avinfl vainfl aivnfl iavnfl vianfl ivanfl avnifl vanifl anvifl navifl vnaifl nvaifl ainvfl ianvfl anivfl naivfl inavfl niavfl vinafl ivnafl vniafl nviafl invafl nivafl lavinf alvinf lvainf vlainf avlinf valinf laivnf alivnf liavnf ilavnf ailvnf ialvnf lvianf vlianf livanf ilvanf vilanf ivlanf avilnf vailnf aivlnf iavlnf vialnf ivalnf lavnif alvnif lvanif vlanif avlnif valnif lanvif alnvif lnavif nlavif anlvif nalvif lvnaif vlnaif lnvaif nlvaif vnlaif nvlaif avnlif vanlif anvlif navlif vnalif nvalif lainvf alinvf lianvf ilanvf ailnvf ialnvf lanivf alnivf lnaivf nlaivf anlivf nalivf linavf ilnavf lniavf nliavf inlavf nilavf ainlvf ianlvf anilvf nailvf inalvf nialvf lvinaf vlinaf livnaf ilvnaf vilnaf ivlnaf lvniaf vlniaf lnviaf nlviaf vnliaf nvliaf linvaf ilnvaf lnivaf nlivaf inlvaf nilvaf vinlaf ivnlaf vnilaf nvilaf invlaf nivlaf avinlf vainlf aivnlf iavnlf vianlf ivanlf avnilf vanilf anvilf navilf vnailf nvailf ainvlf ianvlf anivlf naivlf inavlf niavlf vinalf ivnalf vnialf nvialf invalf nivalf
Note: these 'words' (valid or invalid) are all the permutations of the word flavin. These words are obtained by scrambling the letters in flavin.