a-be a-fu aaaa aaab aaac aaae aaaf aaal aaar aaba aabb aabc aabl aaca aacb aacc aace aacf aacl aacr aacu aaea aaec aafa aafb aafc aaff aafl aala aalc aale aall aalu aara aarc aare aaru abaa abab abac abae abaf abal abar abau abb- abba abbb abbe abbr abca abcb abcc abcf abcl abcr abec abee abel aber abff abla able abra abrc abua abue abuf abul acaa acab acac acae acar acba acbl acca accc acce accf accu ace- acea acec acel acer acfc acfe acfl acla aclc acle aclr aclu acr- acra acrc acre acrr acu- acue acuf acul acur aeac aeaf aecb aecl aeer aela aelc aer- aera aerc afaa afar afca afcb afcc afcu afee afel afer affa affc afla aflc afle afr- afra afrc afre afru afua afue alaa alac alae alal alar alau alb- alba albc albe albu alca alcc alce alea alec alee alef aler aleu alfa alfe all- alla alle alll allr allu alua aluf alur arab arac arae araf aral arar arau arba arbe arc- arca arce area arec aree aref arel areu arfa arfb arfc arff arfu arla arle arr- arra arrc arre arrr arru arua arub arue arul auaa aube auca auce auel auer aufc aufe aul- aula aule aulf aull aulu aur- aura aure baaa baaf baal baar baba babb babe babr babu bac- baca bacc bace bael baer bafc baff bala balc bale balf ball balu bar- bara barb barc bare barf barr baru bau- bauf baul baur bbau bbbb bbeb bbfc bblb bbrc bcaa bcar bcbc bcca bccc bccl bcec bcer bcfc bcra bcru bcuc beaf beal bear beau beba bebb bebe beca becu beeb beef beel beer befa befe beff bela bele bell belu bera berc bere berr beru beur bfca bffl blaa blab blac blae blau blcu blea bleb blee bleu blfc blrc blub blue bluf blur brab brac brae braf brau brca brcb brce brea breb brec bree bref brel brer brfc brfu brrr bruc brue bual buar buba bubb bube bubu buca bucc buce bucu buea buel buer bueu bufc bufe buff bufr bula bulb bule bull bulu bur- bura burb bure burl burr buru caaa caab caac caaf caal caba cabe cabf cabu cac- caca cacc cace cacr caec caer caeu cafa cafb cafc cafe caff cafl cafu cala calc cale calf call calu cara carb carc care carf carl carr cauc cauf caul cbac cbal cbar cbbc cbca cbcc cbce cbcl cbcr cbcu cbea cbec cbee cbef cber cbfb cbfc cblb cblc cbre cbrl ccaa ccab ccac ccaf ccar ccba ccbc ccca cccb cccc cccf cccl cccu ccee ccel ccfa ccfc ccff ccfl ccla cclc ccra ccrc ccre ccrf ccrl ccuc ceac ceal cear ceba cebu cec- ceca cece ceeb ceec ceel cef- cefa cefc cel- cela celc cele celf cell cer- cera cerc cere cerf cerl cfaa cfab cfac cfae cfar cfbc cfbr cfca cfcb cfcf cfcl cffb cffr cfra cfrb cfre clab claf clar clau clea clec clee clef cler cleu clra club clue crab crac craf crar crau crbc crbu crca crcc crce crcr cre- crea creb crec cree creu crfc crfl crlf crub crue cuau cub- cuba cubb cube cuca cucc cuce cuer cufa cufc cuff cula culb culc cule cull cura curb cure curf curl curr e-cl e-la eaaf eaba eaca eacc eaec eafb eala ealc eale eara earb eare earl ebac ebal ebba ebbc ebbr ebcc ebel eber ebfc ebla ebru ebul ebur ecaa ecac ecal ecar ecbc ecbe ecca eccb eccc ecce eccl ecef ecfa ecfc ecfr ecla ecra ecrc ecrf ecrl ecrr ecru ecua eeca eeea eeee eefa eefe eefl eele eera eerc efab efbr efca effa efla efua el-b elab elac elal elar elba elbe elbu elca elcb elce elea elec elee elef eler elfa elfc elfe ella elle ellu elra elue elul eraf eral erau erba erbb erbe erca ercc erce ereb erec erel erer erfc erla erle erll erra errc erre erua erub eruc erur euba eubc euer eufc eula eule eur- eura eurc eure faaa faac faba fabe fabu faca facc face faeb fafa fafc fafe faff fala falc fale fall falu fara farb farc fare farl farr faru faue faul faur fbar fbla fble fcab fcal fcar fcba fcca fccf fcra feaf feal fear feba fece feeb feel feer fefc fefe feff fela fele felf fell fera ferb ferc fere ferr feru ffar ffcc ffee ffff ffrr flab flac flae flcl flea flee fler flub flue fluf flur frab frac frae frau frbc frcc frea free frfc frla frub frue fuar fubb fubu fuc- fuca fuel fufc fuff fufu fula fule full fulu fur- fura fure furl furr laaa laac laal laar laba labe labr labu laca lacc lace lacl lacu lael laer lafb lafc lafe laff lala lale lall lalu lara larb larc lare larf larr laru laub laue lauf laul laur lbar lbcc lblr lcac lcbc lcca lccc lcce lcer lcfc lcfr lcra lcrl le-u leaa leaf leal lear leau leba lebu leca lece leea leef leel leer lefa lefe leff lela lele lell lelu lera lerc lere leuc leur lfca lfcc llcc llef lleu lllc llll lrac lral lrba lrfc lrrc lrrr luau luba lube luca luce luef luer lufe luff lufu lula lule lull lulu lura lure luua raab raaf raba rabb rabe rabl rabu rac- raca racc race racu raec raef rael raer rafa rafc rafe raff rala ralb rale ralf rall rara rarb rare rarf raua raub rauc raue rauf raul rbaf rbbb rbbr rbcl rble rcac rcaf rcbc rccb rccc rcfc rcle rea- reac reae reaf real rear reau reba rebb rebe rebu reca recc rece recr recu reeb reef reel refe reff refl refr refu rela relb rele rell rera rere reru reue reuf reul reuu rfae rfef rffc rffl rlab rlee rlef rleu rlua rrfc rrle rrrr ruba rubb rube rubu ruca ruce ruel ruer rufa rufc rufe ruff rula rule rull rura rurc rure ruru