-vac a-be aaaa aaab aaac aaae aaar aaav aaba aabb aabc aaca aacb aacc aace aacr aacv aaea aaec aaev aara aarc aare aava abaa abab abac abae abar abb- abba abbb abbe abbr abca abcb abcc abcr abec abee aber abra abrc abva acaa acab acac acae acar acba acca accc acce ace- acea acec acer acev acr- acra acrc acre acrr acrv acvv aeac aecb aeer aer- aera aerc aeva arab arac arae arar arba arbe arc- arca arce area arec aree arev arr- arra arrc arre arrr arva arve avab avar avcc avce avea avec aver avra avre avva baaa baar baba babb babe babr bac- baca bacc bace baer bar- bara barb barc bare barr bava bave bbbb bbeb bbrc bcaa bcar bcbc bcca bccc bcec bcer bcra bear beav beba bebb bebe beca beeb beer bera berc bere berr brab brac brae brav brca brcb brce brea breb brec bree brer brev brrr caaa caab caac caba cabe cac- caca cacc cace cacr caec caer cara carb carc care carr cava cave cbac cbar cbbc cbca cbcc cbce cbcr cbea cbec cbee cber cbre cbva cbvb cbve cbvr ccaa ccab ccac ccar ccba ccbc ccca cccb cccc cccv ccee ccra ccrc ccre ceac cear ceba cec- ceca cece ceeb ceec cer- cera cerc cere ceva crab crac crar crbc crca crcc crce crcr cre- crea creb crec cree cvac cvar cvca cvcc cver cvra cvrr eaba eaca eacc eaec eara earb eare eave ebac ebba ebbc ebbr ebcc eber ecaa ecac ecar ecbc ecbe ecca eccb eccc ecce ecra ecrc ecrr ecrv eeca eeea eeee eera eerc eeva erba erbb erbe erca ercc erce ereb erec erer erev erra errc erre erve evac evae evar evea ever evra evre raab raba rabb rabe rac- raca racc race racv raec raer rara rarb rare rava rave rbbb rbbr rcac rcbc rccb rccc rcvr rea- reac reae rear reba rebb rebe reca recc rece recr reeb reev rera rere reva reve rrrr rv-c rvca rver vaar vaca vace vara vare varr vava vbcc vear veba vecc veer ver- vera verb vere veve vrac vrav vrba vver vvvv