-vac a-be aaaa aaab aaac aaae aaav aaba aabb aabc aabt aaca aacb aacc aace aact aacv aaea aaec aaev aata aatc aatt aava abaa abab abac abae abat abb- abba abbb abbe abbt abca abcb abcc abct abec abee abet abta abva ac-t acaa acab acac acae acat acba acca accc acce acct ace- acea acec acet acev acta actc acte actt actv acvv aeac aecb aect aeta aetc aett aeva at-t ataa atab atac atae atat atca atcc atea atec atee atta atte avab avat avcc avce avea avec avva baaa baat baba babb babe bac- baca bacc bace bact bata batc bate batt bava bave bbbb bbeb bbet bcaa bcat bcbc bcca bccc bcec bcet bctc beat beav beba bebb bebe beca beeb beet beta betc bete bett betv btaa btcc btec bttb caaa caab caac caat caba cabe cac- caca cacc cace caec cat- cata catb catc cate catt catv cava cave cbac cbat cbbc cbca cbcc cbce cbct cbea cbec cbee cbet cbta cbtc cbtv cbva cbvb cbve ccaa ccab ccac ccat ccba ccbc ccca cccb cccc cccv ccee cctb cctc cctt cctv ceac ceat ceba cec- ceca cece cect ceeb ceec cet- ceta cete cetv ceva ctab ctae ctba ctca ctec ctta ctvt cvac cvca cvcc cvet cvte eaba eaca eacc eaec eata eate eave ebac ebba ebbc ebcc ecaa ecac ecat ecbc ecbe ecca eccb eccc ecce ecct ect- ecta ectc ectv eeca eeea eeee eeta eetc eete eeva etat etbc etcc etec etee etta ette evac evae evat evea evet taa- taat taba tabb tabc tabe taca tacc tace tact tacv taec tata tatb tate tatt tatv tava tave tbca tbcb tbcc tbce tbta tcca tccc tctc teac teat teba teca tect teec teet teev teta tete tett teva ttab ttbb tttt tvac tvtv vaat vaca vace vata vate vatt vava vbcc vcat veat veba vecc veet veta vete veve vtac vtec vvvv