a-ak a-be aaaa aaab aaac aaae aaal aaar aaba aabb aabc aabl aaca aacb aacc aace aack aacl aacr aaea aaec aaka aake aala aalc aale aall aara aarc aare abaa abab abac abae abak 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 acek acel acer acke acla aclc acle aclr acr- acra acrc acre acrr aeac aecb aecl aeer aeka aela aelc aer- aera aerc akaa akae akal akar akca akee akel aker akka akle akr- akra akre alaa alac alae alak alal alar alb- alba albc albe alca alcc alce alea alec alee alek aler alk- alka alkb alke all- alla alle alll allr arab arac arae arak aral arar arba arbe arc- arca arce area arec aree arek arel arka arke arla arle arr- arra arrc arre arrk arrr baaa baak baal baar baba babb babe babr bac- baca bacc bace back baek bael baer bak- baka bake bakl bakr bala balc bale balk ball bar- bara barb barc bare bark barr bbbb bbeb bblb bbrc bcaa bcar bcbc bcca bccc bccl bcec bcer bcra beak beal bear beba bebb bebe beca beck beeb beek beel beer beka beke bela bele belk bell bera berc bere berk berr blaa blab blac blae blak blea bleb blee blek blkb blrc brab brac brae brak brca brcb brce brea breb brec bree brek brel brer brka brkb brrr caaa caab caac caal caba cabe cac- caca cacc cace cack cacr caec caer caka cake cala calc cale calk call cara carb carc care cark carl carr cbac cbal cbar cbbc cbca cbcc cbce cbcl cbcr cbea cbec cbee cber cbka cbkl cbkr 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 ceke cel- cela celc cele cell cer- cera cerc cere cerl ckac ckbc ckbe ckck ckcl cker ckrc clab clar clea clec clee clek cler clra crab crac crar crbc crca crcc crce crcr cre- crea creb crec cree crkc crkl 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 ecka ecla ecra ecrc ecrl ecrr eeca eeea eeee eeka eeke eele eera eerc eka- ekab ekeb ekek eker ekka el-b elab elac elal elar elba elbe elca elcb elce elea elec elee elek eler elka elke ella elle elra eral erba erbb erbe erca ercc erce ereb erec erel erer erke erla erle erll erra errc erre kaaa kaab kaak kaal kaar kaba kabb kabc kabe kabr kacb kacc kace kacl kael kaer kaka kakc kake kakk kala kalb kalc kale kalk kall kara karb kare kark karl karr kbaa kbab kbac kbae kbak kbal kbar kbba kbbb kbbc kbbe kbbk kbbl kbbr kbca kbcb kbce kbck kbcl kbcr kbeb kbec kbee kbek kbel kber kbkb kbkk kbkl kbkr kbla kblb kble kbll kblr kbra kbrb kbrc kbre kbrk kbrl kcaa kcab kcac kcal kcar kcba kcbc kcbk kcbl kcbr kcca kccb kccc kcck kccl kccr kcea kceb kcec kcee kcel kckc kckk kckl kckr kcla kclc kcle kclk kcll kclr kcrc kcrr kea- keak keal kear keba kebb kebc kebe kebr keca keck kecr keek keel keer keka kekb kekc keke kekl kela kele kelk kell ker- kera kerb kerc kere kerk kerl kerr kkaa kkac kkal kkar kkba kkbb kkbe kkbl kkbr kkcb kkck kkcl kkcr kkea kkkk kklb kklc kkll kkrb kkrc kkre kkrk kkrl kkrr klaa klab klac klak klal klar klbb klbc klbe klbl klca klcb klcc klce klck klcl klcr klea kleb klec klee klek kler klka klkc klkk klkl klkr klla kllb kllc klle kllk klrc klrk klrr krab krac krae krak kral krar krba krbb krbe krbk krbl krbr krca krcb krcc krce krcl krea kreb krec kree krek krka krkc krke krkk krkr krla krlc krle krrb krrc krre krrk krrl krrr laaa laac laak laal laar laba labe labr laca lacc lace lack lacl lael laer laka lake lala lale lall lara larb larc lare lark larr lbar lbcc lblr lcac lcbc lcca lccc lcce lcer lcra lcrl leaa leak leal lear leba leca lece leck leea leek leel leer leka leke lekk lela lele lell lera lerc lere lerk lkab lkal llcc lllc llll lrac lral lrba lrrc lrrr raab raak raba rabb rabe rabk rabl rac- raca racc race rack raec rael raer raka rake rakk rala ralb rale rall rara rarb rare rark rbbb rbbr rbcl rble rcac rcbc rccb rccc rcle rea- reac reae reak real rear reba rebb rebe rebk reca recc rece reck recr reeb reek reel reka reke rela relb rele rell rera rere rlab rlee rrle rrrr