-vac aaaa aaac aaae aaav aaca aacc aace aaco aact aacv aaea aaec aaev aaoe aaoo aata aatc aatt aava ac-t acaa acac acae acat acca accc acce acco acct ace- acea acec acet acev acoa acoe acot acta actc acte acto actt actv acvv aeac aect aeta aetc aeto aett aeva aoca aoce aotc at-t ataa atac atae atat atca atcc atco atea atec atee ateo atoc atoe atot atta atte atto avao avat avcc avce avco avea avec aveo avot avva avvo caaa caac caat cac- caca cacc cace caco caec cat- cata catc cate cato catt catv cava cave cavo ccaa ccac ccat ccca cccc cccv ccee ccoc cctc cctt cctv ccvo ceac ceat cec- ceca cece ceco cect ceec cet- ceta cete ceto cetv ceva cevo coat coca coce coco coct coot cota cotc cote coto cott cova cove covo ctae ctca ctec ctot ctta ctvo ctvt cvac cvca cvcc cvet cvte eaca eacc eaec eata eate eave ecaa ecac ecao ecat ecca eccc ecce ecco ecct eco- ecot ect- ecta ectc ecto ectv eeca eeea eeee eeoc eeta eetc eete eeva eota eotc eoto etat etcc etco etec etee etoe etta ette etto etvo evac evae evat evea evet evoe evoo o-eo oate ocac ocat occa occc occt oce ocee ocet oct- octa octe octo oec- oeca oecc oeec oeta ooaa oooo otac otea otee oto- otoe otoo otov otta otte otto ovee ovet ovo- ovoo ovot taa- taat taca tacc tace taco tact tacv taec taoa tata tate tato tatt tatv tava tave tavo tcca tccc tcov tctc teac teat teca teco tect teec teet teev teta tete teto tett teva toat toca toce toco toea toee toet tooa toot tota totc tote toto tott tova tove tovo tteo ttoe tttt tvac tvtv vaat vaca vace vaco vata vate vato vatt vava vcat veat vecc veet veta vete veto veve vevo voat voca voce voet vooc voot vota vote voto vtac vtec vvvv