-vac a-be aaaa aaab aaac aaae aaav aaba aabb aabc aabt aaca aacb aacc aace aaco aact aacv aaea aaec aaev aaoe aaoo aata aatc aatt aava abaa abab abac abae abat abb- abba abbb abbe abbo abbt abca abcb abcc abct abec abee abet aboa abob aboo abot abov abta abva ac-t acaa acab acac acae acat acba acca accc acce acco acct ace- acea acec acet acev acoa acoe acot acta actc acte acto actt actv acvv aeac aecb aect aeta aetc aeto aett aeva aoba aoca aoce aotc at-t ataa atab atac atae atat atca atcc atco atea atec atee ateo atob atoc atoe atot atta atte atto avab avao avat avcc avce avco avea avec aveo avot avva avvo baaa baat baba babb babe babo bac- baca bacc bace baco bact bata batc bate bato batt bava bave bbbb bbeb bbet bcaa bcat bcbc bcca bccc bcec bcet bctc bcvo beat beav beba bebb bebe bebo beca beeb beet beo- beot beta betc bete beto bett betv bevo boab boac boat boba bobb bobe bobo boca boce boco boea boec boee boeo boet boob booc booe boot bota botb bote boto bott bova bove bovo btaa btcc btec btob bttb c-bo caaa caab caac caat caba cabe cabo cac- caca cacc cace caco caec cat- cata catb catc cate cato catt catv cava cave cavo cbac cbat cbbc cbca cbcc cbce cbct cbea cbec cbee cbet cbot cbta cbtc cbtv cbva cbvb cbve ccaa ccab ccac ccat ccba ccbc ccca cccb cccc cccv ccee ccob ccoc cctb cctc cctt cctv ccvo ceac ceat ceba cec- ceca cece ceco cect ceeb ceec cet- ceta cete ceto cetv ceva cevo coat coba cobb cobe cobo coca coce coco coct coob coot cota cotb cotc cote coto cott cova cove covo ctab ctae ctba ctca ctec ctot ctta ctvo ctvt cvac cvca cvcc cvet cvte eaba eaca eacc eaec eata eate eave ebac ebba ebbc ebbo ebcc eboe eboo ecaa ecac ecao ecat ecbc ecbe ecca eccb eccc ecce ecco ecct eco- ecot ect- ecta ectc ecto ectv eeca eeea eeee eeoc eeta eetc eete eeva eota eotc eoto etat etbc etcc etco etec etee etoe etta ette etto etvo evac evae evat evea evet evoe evoo o-eo oate obba obbo obea obec obet oboe obot ocab ocac ocat ocbc occa occc occt oce ocee ocet oct- octa octe octo oec- oeca oecc oeec oeta ooaa ooba oobe oooo ootb otac otea otee oto- otoe otoo otov otta otte otto ovee ovet ovo- ovoo ovot taa- taat taba tabb tabc tabe tabo taca tacc tace taco tact tacv taec taoa tata tatb tate tato tatt tatv tava tave tavo tbca tbcb tbcc tbce tbta tcca tccc tcov tctc teac teat teba tebo teca teco tect teec teet teev teta tete teto tett teva toab toat toba tobe tobo tobt toca toce toco toea toee toet tooa toot tota totc tote toto tott tova tove tovo ttab ttbb tteo ttoe tttt tvac tvtv vaat vaca vace vaco vata vate vato vatt vava vbcc vcat veat veba vecc veet veta vete veto veve vevo voat voca voce voet vooc voot vota vote voto vtac vtec vvob vvvv