-vac aaaa aaac aaae aaav aaca aacc aace aact aacv aaea aaec aaev aata aatc aatt aava ac-t acaa acac acae acat acca accc acce acct ace- acea acec acet acev acta actc acte actt actv acvv aeac aect aeta aetc aett aeva at-t ataa atac atae atat atca atcc atea atec atee atta atte avat avcc avce avea avec avva caaa caac caat cac- caca cacc cace caec cat- cata catc cate catt catv cava cave ccaa ccac ccat ccca cccc cccv ccee cctc cctt cctv ceac ceat cec- ceca cece cect ceec cet- ceta cete cetv ceva ctae ctca ctec ctta ctvt cvac cvca cvcc cvet cvte eaca eacc eaec eata eate eave ecaa ecac ecat ecca eccc ecce ecct ect- ecta ectc ectv eeca eeea eeee eeta eetc eete eeva etat etcc etec etee etta ette evac evae evat evea evet taa- taat taca tacc tace tact tacv taec tata tate tatt tatv tava tave tcca tccc tctc teac teat teca tect teec teet teev teta tete tett teva tttt tvac tvtv vaat vaca vace vata vate vatt vava vcat veat vecc veet veta vete veve vtac vtec vvvv