-vac a-be aaaa aaab aaac aaae aaal aaav aaba aabb aabc aabl aabt aaca aacb aacc aace aacl aact aacv aaea aaec aaev aala aalc aale aall aata aatc aatt aava abaa abab abac abae abal abat abb- abba abbb abbe abbt abca abcb abcc abcl abct abec abee abel abet abla able ablv abta abva ac-t acaa acab acac acae acat acba acbl acca accc acce acct ace- acea acec acel acet acev acla aclc acle acta actc acte actl actt actv acvv aeac aecb aecl aect aela aelc aeta aetc aett aeva alaa alac alae alal alat alb- alba albc albe alca alcc alce alea alec alee alet alev all- alla alle alll alta alte alva at-l at-t ataa atab atac atae atal atat atca atcc atcl atea atec atee atel atla atle atta atte avab aval avat avcc avce avea avec avel avlb avva baaa baal baat baba babb babe bac- baca bacc bace bact bael bala balc bale ball balt bata batc bate batt bava bave bbbb bbeb bbet bblb bcaa bcat bcbc bcca bccc bccl bcec bcet bctc beal beat beav beba bebb bebe beca beeb beel beet bela bele bell belt beta betc bete bett betv blaa blab blac blae blat blbt blea bleb blee blet blvt btaa btcc btcl btec btla bttb caaa caab caac caal caat caba cabe cac- caca cacc cace caec cala calc cale call calt cat- cata catb catc cate catt catv cava cave cbac cbal cbat cbbc cbca cbcc cbce cbcl cbct cbea cbec cbee cbet cblb cblc cbta cbtc cbtl cbtv cbva cbvb cbve ccaa ccab ccac ccat ccba ccbc ccca cccb cccc cccl cccv ccee ccel ccla cclc cclv cctb cctc cctl cctt cctv ceac ceal ceat ceba cec- ceca cece cect ceeb ceec ceel cel- cela celc cele cell celt cet- ceta cete cetv ceva clab clat clav clea clec clee clet cltb cltc cltv ctab ctae ctal ctba ctca ctec ctle ctta ctvt cvac cvca cvcc cvet cvte e-cl e-la eaba eaca eacc eaec eala ealc eale eata eate eave ebac ebal ebba ebbc ebcc ebel ebla ecaa ecac ecal ecat ecbc ecbe ecca eccb eccc ecce eccl ecct ecla eclt ect- ecta ectc ectv eeca eeea eeee eele eelv eeta eetc eete eeva el-b elab elac elal elat elba elbe elca elcb elce elea elec elee elet elev ella elle elta elte elva elve etal etat etbc etcc etec etee etel etla etta ette evac evae eval evat evea evel evet evla laaa laac laal laat laba labe laca lacc lace lacl lact lael laet lala lale lall lata latc late latt latv lava lavc lave lbcc lcac lcat lcbc lcca lccc lcce lctl leaa leal leat leba leca lece lect leea leel leet lela lele lell leta lete lett lev- leva levc leve llat llcc llet lllc llll ltac ltae ltbl ltcc ltee lttc lttv lvcc lvea taa- taal taat taba tabb tabc tabe tabl taca tacc tace tacl tact tacv taec tael tala talc tale tall tata tatb tate tatt tatv tava tave tbca tbcb tbcc tbce tbta tcca tccc tctc teac teal teat teba teca tecl tect teec teel teet teev tel- tela telc tele tell telt teta tete tett teva tevl tlac ttab ttbb tttt tvac tvel tvtv vaal vaat vaca vace vala vale vall valt vata vate vatt vava vbcc vcal vcat veal veat veba vecc veel veet vel- vela vele vell velt veta vete veve vlab vlat vlba vlcc vlvt vtac vtec vtvl vvvv