a-be aaaa aaab aaac aaae aaal aaba aabb aabc aabl aaca aacb aacc aace aacl aaea aaec aage aala aalc aale aall abaa abab abac abae abag abal abb- abba abbb abbe abca abcb abcc abcl abec abee abel abgl abla able acaa acab acac acae acag acba acbl acca accc acce ace- acea acec acel acga acla aclc acle aeac aecb aecl aega aela aelc agac agag agal agba agca agcc agce agea agee agel agga agge agla aglc agle alaa alac alae alag alal alb- alba albc albe alca alcc alce alea alec alee aleg alg- alga alge all- alla alle alll baaa baal baba babb babe bac- baca bacc bace bael baga bage bagg bala balc bale ball bbbb bbeb bbga bblb bcaa bcbc bcbg bcca bccc bccl bcec beag beal beba bebb bebe beca beeb beeg beel bega begg bela bele belg bell bgca blaa blab blac blae blag blea bleb blee bleg caaa caab caac caal caba cabe cabg cac- caca cacc cace caec caga cage cagg cala calc cale call cbac cbal cbbc cbca cbcc cbce cbcl cbea cbec cbee cbga cbgb cblb cblc ccaa ccab ccac ccag ccba ccbc ccca cccb cccc cccl ccee ccel ccga ccgc ccla cclc cclg ceac ceal ceba cec- ceca cece ceeb ceec ceel cege cel- cela celc cele cell cgac cgal cgcc cgcg cgel clab clag clea clec clee cleg e-cl e-la eaba eaca eacc eaec eaga eage eagl eala ealc eale ebac ebal ebba ebbc ebcc ebel ebla ecaa ecac ecal ecbc ecbe ecca eccb eccc ecce eccl ecla eeca eeea eeee eega eele egaa egae egal egba egbe egcc egcg egea egec egee egel eggb egge eglc egle el-b elab elac elal elba elbe elca elcb elce elea elec elee elgg ella elle gaal gaba gabb gabe gabl gace gaea gaec gael gaga gage gagg gala gale gall gbag gc-c gcaa gcal gcbc gccc gclc geab geal geba gebe geca gece geel gege gegg gegl gela gelb gele gelg gell ggcl gggg glaa glab glbc glcc glce gleb glee gleg glge laaa laac laag laal laba labe laca lacc lace lacl lael lag- laga lage lagg lala lale lall lbcc lcac lcbc lcca lccc lcce leaa leag leal leba leca lece leea leel lega lege legg lela lele lell lgca llcc llgc lllc llll