-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 abaj abal abb- abba abbb abbe abca abcb abcc abcl abec abee abel abla able ablj 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 ajab ajac ajba ajee ajla alaa alac alae alal alb- alba albc albe alca alcc alce alea alec alee alev all- alla alle alll alva avab avaj aval avcc avce avea avec avel avlb avva baaa baal baba babb babe bac- baca bacc bace bael baja bala balc bale ball bava bave bbbb bbeb bblb bcaa bcbc bcca bccc bccl bcec beal beav beba bebb bebe beca beeb beej beel beja bela bele bell bjcc bjec blaa blab blac blae blaj blea bleb blee caaa caab caac caal caba cabe cac- caca cacc cace caec caja 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 ceja cejc cel- cela celc cele cell ceva cjbc cjca cjcb cjcj cjcl cjlv cjvb 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 evje evla jaal jaba jaca jacc jace jacl jael jaja jala jalc jale java jave jbaa jbel jcbc jccc jebb jebe jeel jell jjcc jlab laaa laac laaj laal laba labe laca lacc lace lacl lael laja laje lala lale lall lava lavc lave lbcc lcac lcbc lcca lccc lcce leaa leal leba leca lece leea leej leel lela lele lell lev- leva levc leve ljeb ljla llcc lllc llll lvcc lvea vaal vaca vace vaja vala vale vall vava vbcc vcal veal veba vecc veel veja vel- vela vele vell veve vjaa vlab vlba vlcc vvvv