-vac a-be aaaa aaab aaac aaae aaar aaav aaba aabb aabc aaca aacb aacc aace aacr aacu aacv aaea aaec aaev aara aarc aare aaru aava abaa abab abac abae abar abau abb- abba abbb abbe abbr abca abcb abcc abcr abec abee aber abra abrc abua abue abva acaa acab acac acae acar acba acca accc acce accu ace- acea acec acer acev acr- acra acrc acre acrr acrv acu- acue acur acvv aeac aecb aeer aer- aera aerc aeva arab arac arae arar arau arba arbe arc- arca arce area arec aree areu arev arr- arra arrc arre arrr arru arua arub arue arva arve auaa aube auca auce auer aur- aura aure auve avab avar avcc avce avea avec aver aveu avra avre avur avva baaa baar baba babb babe babr babu bac- baca bacc bace baer bar- bara barb barc bare barr baru bau- baur bava bave bavu bbau bbbb bbeb bbrc bcaa bcar bcbc bcca bccc bcec bcer bcra bcru bcuc bear beau beav beba bebb bebe beca becu beeb beer bera berc bere berr beru beur brab brac brae brau brav brca brcb brce brea breb brec bree brer brev brrr bruc brue bruv buar buba bubb bube bubu buca bucc buce bucu buea buer bueu bur- bura burb bure burr buru buve caaa caab caac caba cabe cabu cac- caca cacc cace cacr caec caer caeu cara carb carc care carr cauc cava cave cavu cbac cbar cbbc cbca cbcc cbce cbcr cbcu cbea cbec cbee cber cbre cbva cbvb cbve cbvr ccaa ccab ccac ccar ccba ccbc ccca cccb cccc cccu cccv ccee ccra ccrc ccre ccuc ceac cear ceba cebu cec- ceca cece ceeb ceec cer- cera cerc cere ceva crab crac crar crau crbc crbu crca crcc crce crcr cre- crea creb crec cree creu crub crue cuau cub- cuba cubb cube cuca cucc cuce cuer cura curb cure curr cuve cvac cvar cvca cvcc cver cvra cvrr eaba eaca eacc eaec eara earb eare eave ebac ebba ebbc ebbr ebcc eber ebru ebur ecaa ecac ecar ecbc ecbe ecca eccb eccc ecce ecra ecrc ecrr ecru ecrv ecua eeca eeea eeee eera eerc eeva erau erba erbb erbe erca ercc erce ereb erec erer erev erra errc erre erua erub eruc erur eruv erve euba eubc euer eur- eura eurc eure evac evae evar evea ever evra evre raab raba rabb rabe rabu rac- raca racc race racu racv raec raer rara rarb rare raua raub rauc raue rava rave rbbb rbbr rcac rcbc rccb rccc rcuv rcvr rea- reac reae rear reau reba rebb rebe rebu reca recc rece recr recu reeb reev rera rere reru reue reuu reva reve rrrr ruba rubb rube rubu ruca ruce ruer rura rurc rure ruru ruve ruvu rv-c rvca rver uabc uaca uarc uaru uaua ubac ubar ubba ubbe uber ubra ucar ucav ucbc ucca ucea ucrc ucua ueba urac urau urba urbe urca ure- urea urra urre urur urva urve uuuu uv-a uv-b uv-c uvaa uvac uvae uvea uver uvvu vaar vaca vace vara vare varr varu vava vbcc vear veau veba vecc veer ver- vera verb vere veur veve vrac vrav vrba vuca vurb vver vvvv