ogival goival oigval iogval gioval igoval ogvial govial ovgial vogial gvoial vgoial oivgal iovgal ovigal voigal ivogal viogal givoal igvoal gvioal vgioal ivgoal vigoal ogiavl goiavl oigavl iogavl gioavl igoavl ogaivl goaivl oagivl aogivl gaoivl agoivl oiagvl ioagvl oaigvl aoigvl iaogvl aiogvl giaovl igaovl gaiovl agiovl iagovl aigovl ogvail govail ovgail vogail gvoail vgoail ogavil goavil oagvil aogvil gaovil agovil ovagil voagil oavgil aovgil vaogil avogil gvaoil vgaoil gavoil agvoil vagoil avgoil oivagl iovagl oviagl voiagl ivoagl vioagl oiavgl ioavgl oaivgl aoivgl iaovgl aiovgl ovaigl voaigl oavigl aovigl vaoigl avoigl ivaogl viaogl iavogl aivogl vaiogl aviogl givaol igvaol gviaol vgiaol ivgaol vigaol giavol igavol gaivol agivol iagvol aigvol gvaiol vgaiol gaviol agviol vagiol avgiol ivagol viagol iavgol aivgol vaigol avigol ogivla goivla oigvla iogvla giovla igovla ogvila govila ovgila vogila gvoila vgoila oivgla iovgla ovigla voigla ivogla viogla givola igvola gviola vgiola ivgola vigola ogilva goilva oiglva ioglva giolva igolva ogliva goliva olgiva logiva gloiva lgoiva oilgva iolgva oligva loigva ilogva liogva gilova iglova gliova lgiova ilgova ligova ogvlia govlia ovglia voglia gvolia vgolia oglvia golvia olgvia logvia glovia lgovia ovlgia volgia olvgia lovgia vlogia lvogia gvloia vgloia glvoia lgvoia vlgoia lvgoia oivlga iovlga ovilga voilga ivolga violga oilvga iolvga olivga loivga ilovga liovga ovliga voliga olviga loviga vloiga lvoiga ivloga viloga ilvoga livoga vlioga lvioga givloa igvloa gviloa vgiloa ivgloa vigloa gilvoa iglvoa glivoa lgivoa ilgvoa ligvoa gvlioa vglioa glvioa lgvioa vlgioa lvgioa ivlgoa vilgoa ilvgoa livgoa vligoa lvigoa ogialv goialv oigalv iogalv gioalv igoalv ogailv goailv oagilv aogilv gaoilv agoilv oiaglv ioaglv oaiglv aoiglv iaoglv aioglv giaolv igaolv gaiolv agiolv iagolv aigolv ogilav goilav oiglav ioglav giolav igolav ogliav goliav olgiav logiav gloiav lgoiav oilgav iolgav oligav loigav ilogav liogav giloav igloav glioav lgioav ilgoav ligoav ogaliv goaliv oagliv aogliv gaoliv agoliv oglaiv golaiv olgaiv logaiv gloaiv lgoaiv oalgiv aolgiv olagiv loagiv alogiv laogiv galoiv agloiv glaoiv lgaoiv algoiv lagoiv oialgv ioalgv oailgv aoilgv iaolgv aiolgv oilagv iolagv oliagv loiagv iloagv lioagv oaligv aoligv olaigv loaigv aloigv laoigv ialogv ailogv ilaogv liaogv aliogv laiogv gialov igalov gailov agilov iaglov aiglov gilaov iglaov gliaov lgiaov ilgaov ligaov galiov agliov glaiov lgaiov algiov lagiov ialgov ailgov ilagov liagov aligov laigov ogvali govali ovgali vogali gvoali vgoali ogavli goavli oagvli aogvli gaovli agovli ovagli voagli oavgli aovgli vaogli avogli gvaoli vgaoli gavoli agvoli vagoli avgoli ogvlai govlai ovglai voglai gvolai vgolai oglvai golvai olgvai logvai glovai lgovai ovlgai volgai olvgai lovgai vlogai lvogai gvloai vgloai glvoai lgvoai vlgoai lvgoai ogalvi goalvi oaglvi aoglvi gaolvi agolvi oglavi golavi olgavi logavi gloavi lgoavi oalgvi aolgvi olagvi loagvi alogvi laogvi galovi aglovi glaovi lgaovi algovi lagovi ovalgi voalgi oavlgi aovlgi vaolgi avolgi ovlagi volagi olvagi lovagi vloagi lvoagi oalvgi aolvgi olavgi loavgi alovgi laovgi valogi avlogi vlaogi lvaogi alvogi lavogi gvaloi vgaloi gavloi agvloi vagloi avgloi gvlaoi vglaoi glvaoi lgvaoi vlgaoi lvgaoi galvoi aglvoi glavoi lgavoi algvoi lagvoi valgoi avlgoi vlagoi lvagoi alvgoi lavgoi oivalg iovalg ovialg voialg ivoalg vioalg oiavlg ioavlg oaivlg aoivlg iaovlg aiovlg ovailg voailg oavilg aovilg vaoilg avoilg ivaolg viaolg iavolg aivolg vaiolg aviolg oivlag iovlag ovilag voilag ivolag violag oilvag iolvag olivag loivag ilovag liovag ovliag voliag olviag loviag vloiag lvoiag ivloag viloag ilvoag livoag vlioag lvioag oialvg ioalvg oailvg aoilvg iaolvg aiolvg oilavg iolavg oliavg loiavg iloavg lioavg oalivg aolivg olaivg loaivg aloivg laoivg ialovg ailovg ilaovg liaovg aliovg laiovg ovalig voalig oavlig aovlig vaolig avolig ovlaig volaig olvaig lovaig vloaig lvoaig oalvig aolvig olavig loavig alovig laovig valoig avloig vlaoig lvaoig alvoig lavoig ivalog vialog iavlog aivlog vailog avilog ivlaog vilaog ilvaog livaog vliaog lviaog ialvog ailvog ilavog liavog alivog laivog valiog avliog vlaiog lvaiog alviog laviog givalo igvalo gvialo vgialo ivgalo vigalo giavlo igavlo gaivlo agivlo iagvlo aigvlo gvailo vgailo gavilo agvilo vagilo avgilo ivaglo viaglo iavglo aivglo vaiglo aviglo givlao igvlao gvilao vgilao ivglao viglao gilvao iglvao glivao lgivao ilgvao ligvao gvliao vgliao glviao lgviao vlgiao lvgiao ivlgao vilgao ilvgao livgao vligao lvigao gialvo igalvo gailvo agilvo iaglvo aiglvo gilavo iglavo gliavo lgiavo ilgavo ligavo galivo aglivo glaivo lgaivo algivo lagivo ialgvo ailgvo ilagvo liagvo aligvo laigvo gvalio vgalio gavlio agvlio vaglio avglio gvlaio vglaio glvaio lgvaio vlgaio lvgaio galvio aglvio glavio lgavio algvio lagvio valgio avlgio vlagio lvagio alvgio lavgio ivalgo vialgo iavlgo aivlgo vailgo avilgo ivlago vilago ilvago livago vliago lviago ialvgo ailvgo ilavgo liavgo alivgo laivgo valigo avligo vlaigo lvaigo alvigo lavigo
Note: these 'words' (valid or invalid) are all the permutations of the word ogival. These words are obtained by scrambling the letters in ogival.