-vac aaaa aaab aaac aaal aaav aaba aabb aabc aabl aabt aaca aacb aacc aacl aaco aact aacu aacv aala aalc aall aalo aalu aaoo aata aatc aatt aava abaa abab abac abal abat abau abb- abba abbb abbo abbt abca abcb abcc abcl abct abla ablo ablv aboa abob abol aboo abot abou abov abta abtu abua abul abut abva ac-t acaa acab acac acat acba acbl acca accc acco acct accu acla aclc aclu acoa acol acot acou acta actc actl acto actt actu actv acu- acul acuo acut acvv alaa alac alal alao alat alau alb- alba albc albo albu alca alcc alco all- alla alll allo allu aloa aloc alol aloo alot alou alov alta alto alua alut alva alvo aoba aoca aola aotc aoul aout at-l at-t ataa atab atac atal atat atca atcc atcl atco atla atlo atob atoc atol atot atta atto attu atua atub atuc atul auaa auca auct aul- aula aull aulo ault aulu auol aut- auto avab aval avao avat avcc avco avlb avot avou avva avvo baaa baal baat baba babb babo babu bac- baca bacc baco bact bala balc ball balo balt balu baol bata batc bato batt batu bau- baul bava bavu bbau bbbb bblb bcaa bcat bcbc bcca bccc bccl bctc bcuc bcvo blaa blab blac blat blau blbt blcu blob bloc bloo blot blou blub blut blvt boab boac boal boat boba bobb bobo bobu boca boco bocu bola boll bolo bolt bolu boob booc bool boot bota botb boto bott boua boul bout bova bovo btaa btcc btcl btla btob bttb bual buat buba bubb bubo bubu buca bucc buco bucu bula bulb bull bult bulu buol but- buta buto butt c-bo caaa caab caac caal caat caba cabo cabu cac- caca cacc caco cala calc call calo calt calu caol cat- cata catb catc cato catt catu catv cauc caul cauo caut cava cavo cavu cbac cbal cbat cbbc cbca cbcc cbcl cbct cbcu cblb cblc cbol cbot cbta cbtc cbtl cbtv cbva cbvb ccaa ccab ccac ccat ccba ccbc ccca cccb cccc cccl cccu cccv ccla cclc cclv ccob ccoc cctb cctc cctl cctt cctv ccuc ccut ccvo clab clat clau clav clob cloo clot clou cltb cltc cltv club clut coal coat coba cobb cobo cobu coca coco coct cocu col- cola colb coll colo colt colu coob cool coot cota cotb cotc coto cott cotu coua coub coul cout cova covo ctab ctal ctba ctca ctol ctot ctta ctvo ctvt cuau cub- cuba cubb cuca cucc cula culb culc cull culo cult cut- cuta cutc cuto cutt cutv cvac cvca cvcc laaa laac laal laat laba labo labu laca lacc lacl laco lact lacu lala lall lalo lalu laou lata latc lato latt latu latv laub laul laut lava lavc lavo lbcc lcac lcat lcbc lcca lccc lctl lcto llao llat llcc lllc llll lloa lloc lloo lo-v loac loat lob- loba lobb lobo loca locc loco locu lola loll lolo loob looc lool loot lota lotl loto lott lotv loul lout louu lovo ltac ltbl ltcc lttc lttv ltuc luau luba luca lula lull lulu luta lutv luua lvcc lvov oaau oall obal obba obbo obla oblu obol obot ocab ocac ocal ocat ocbc occa occc occt oclc oct- octa octo ocul olac olat olav olba olbo olca olcc olla ollo olot olov olta oltu ooaa ooba oola oolo oooo ootb otac otcl oto- otoo otov otta otto ottu ouac ouat oucc oula oulu out- outa outb outo ouu- oval ovo- ovol ovoo ovot taa- taal taat taba tabb tabc tabl tabo tabu taca tacc tacl taco tact tacv tala talc tall talo talu taoa taou tata tatb tato tatt tatu tatv taua taub tauc taul taut tava tavo tbca tbcb tbcc tbta tcca tccc tccu tcov tctc tcul tlac tlco toab toal toat toau toba tobo tobt tobu toca toco tol- tola toll tolo tolt tolu tooa tool toot tota totc toto tott toul tout touv tova tovo ttab ttbb tttt ttul tual tuao tuat tuba tubb tubo tubu tuca tucc tuco tula tull tulo tulu tuta tutl tuto tutt tutu tuuo tuva tvac tvtv uabc uaca uaoc uata uatu uatv uaua ubac ubal ubba ubbo ubla ublo uboc ucal ucat ucav ucbc ucca ucla uctv ucua ucut ulaa ulbc ulcc ulco ulla ullo ulo- uloc ulta ulto ultt ulua ulul ulva uocc uolc uovo utac utal utau utto uttu uulu uuoc uuta uuuu uv-a uv-b uv-c uvaa uvac uval uvat uvvu vaal vaat vaca vaco vala vall valo valt valu vata vato vatt vatu vaut vava vbcc vcal vcat vlab vlat vlba vlcc vloc vlvt voat voca vola volc voll volo volt vooc vool voot vota voto voul vout vtac vtol vtvl vual vuca vuco vula vull vult vutv vvob vvvv