a-be aaaa aaab aaac aaae aaal aaar aaba aabb aabc aabl aaca aacb aacc aace aacl aacr aaea aaec aala aalc aale aall aara aarc aare abaa abab abac abae abal abar abb- abba abbb abbe abbr abca abcb abcc abcl abcr abec abee abel aber abla able abra abrc acaa acab acac acae acar acba acbl acca accc acce ace- acea acec acel acer acla aclc acle aclr acr- acra acrc acre acrr aeac aecb aecl aeer aela aelc aer- aera aerc alaa alac alae alal alar alb- alba albc albe alca alcc alce alea alec alee aler all- alla alle alll allr arab arac arae aral arar arba arbe arc- arca arce area arec aree arel arla arle arr- arra arrc arre arrr baaa baal baar baba babb babe babr bac- baca bacc bace bael baer bala balc bale ball bar- bara barb barc bare barr bbbb bbeb bblb bbrc bcaa bcar bcbc bcca bccc bccl bcec bcer bcra beal bear beba bebb bebe beca beeb beel beer bela bele bell bera berc bere berr blaa blab blac blae blea bleb blee blrc brab brac brae brca brcb brce brea breb brec bree brel brer brrr caaa caab caac caal caba cabe cac- caca cacc cace cacr caec caer cala calc cale call cara carb carc care carl carr cbac cbal cbar cbbc cbca cbcc cbce cbcl cbcr cbea cbec cbee cber cblb cblc cbre cbrl ccaa ccab ccac ccar ccba ccbc ccca cccb cccc cccl ccee ccel ccla cclc ccra ccrc ccre ccrl ceac ceal cear ceba cec- ceca cece ceeb ceec ceel cel- cela celc cele cell cer- cera cerc cere cerl clab clar clea clec clee cler clra crab crac crar crbc crca crcc crce crcr cre- crea creb crec cree e-cl e-la eaba eaca eacc eaec eala ealc eale eara earb eare earl ebac ebal ebba ebbc ebbr ebcc ebel eber ebla ecaa ecac ecal ecar ecbc ecbe ecca eccb eccc ecce eccl ecla ecra ecrc ecrl ecrr eeca eeea eeee eele eera eerc el-b elab elac elal elar elba elbe elca elcb elce elea elec elee eler ella elle elra eral erba erbb erbe erca ercc erce ereb erec erel erer erla erle erll erra errc erre laaa laac laal laar laba labe labr laca lacc lace lacl lael laer lala lale lall lara larb larc lare larr lbar lbcc lblr lcac lcbc lcca lccc lcce lcer lcra lcrl leaa leal lear leba leca lece leea leel leer lela lele lell lera lerc lere llcc lllc llll lrac lral lrba lrrc lrrr raab raba rabb rabe rabl rac- raca racc race raec rael raer rala ralb rale rall rara rarb rare rbbb rbbr rbcl rble rcac rcbc rccb rccc rcle rea- reac reae real rear reba rebb rebe reca recc rece recr reeb reel rela relb rele rell rera rere rlab rlee rrle rrrr