-vac a-be aaaa aaab aaac aaae aaal aaav aaba aabb aabc aabl aaca aacb aacc aace aacl aacv aaea aaec aaev aala aalc aale aall aava abaa abab abac abae abal abb- abba abbb abbe abca abcb abcc abcl abec abee abel abla able ablv abva acaa acab acac acae acba acbl acca accc acce ace- acea acec acel acev acla aclc acle acvv aeac aecb aecl aela aelc aeva alaa alac alae alal alb- alba albc albe alca alcc alce alea alec alee alev all- alla alle alll alva avab aval avcc avce avea avec avel avlb avva baaa baal baba babb babe bac- baca bacc bace bael bala balc bale ball bava bave bbbb bbeb bblb bcaa bcbc bcca bccc bccl bcec beal beav beba bebb bebe beca beeb beel bela bele bell blaa blab blac blae blea bleb blee caaa caab caac caal caba cabe cac- caca cacc cace caec cala calc cale call cava cave cbac cbal cbbc cbca cbcc cbce cbcl cbea cbec cbee cblb cblc cbva cbvb cbve ccaa ccab ccac ccba ccbc ccca cccb cccc cccl cccv ccee ccel ccla cclc cclv ceac ceal ceba cec- ceca cece ceeb ceec ceel cel- cela celc cele cell ceva clab clav clea clec clee cvac cvca cvcc e-cl e-la eaba eaca eacc eaec eala ealc eale eave ebac ebal ebba ebbc ebcc ebel ebla ecaa ecac ecal ecbc ecbe ecca eccb eccc ecce eccl ecla eeca eeea eeee eele eelv eeva el-b elab elac elal elba elbe elca elcb elce elea elec elee elev ella elle elva elve evac evae eval evea evel evla laaa laac laal laba labe laca lacc lace lacl lael lala lale lall lava lavc lave lbcc lcac lcbc lcca lccc lcce leaa leal leba leca lece leea leel lela lele lell lev- leva levc leve llcc lllc llll lvcc lvea vaal vaca vace vala vale vall vava vbcc vcal veal veba vecc veel vel- vela vele vell veve vlab vlba vlcc vvvv