a-be aaaa aaab aaac aaae aaaf aaal aaar aaba aabb aabc aabl aabt aaca aacb aacc aace aacf aacl aacr aact aaea aaec aafa aafb aafc aaff aafl aala aalc aale aall aara aarc aare aart aata aatc aatf aatt abaa abab abac abae abaf abal abar abat abb- abba abbb abbe abbr abbt abca abcb abcc abcf abcl abcr abct abec abee abel aber abet abff abla able abra abrc abta ac-t acaa acab acac acae acar acat acba acbl acca accc acce accf acct ace- acea acec acel acer acet acfc acfe acfl acft acla aclc acle aclr acr- acra acrc acre acrr acta actc acte actf actl actt aeac aeaf aecb aecl aect aeer aela aelc aer- aera aerc aeta aetc aetf aetr aett afaa afar afat afca afcb afcc afee afel afer afet affa affc afft afla aflc afle afr- afra afrc afre afta aftc afte alaa alac alae alal alar alat alb- alba albc albe alca alcc alce alea alec alee alef aler alet alfa alfe all- alla alle alll allr alta alte arab arac arae araf aral arar arat arba arbe arc- arca arce arct area arec aree aref arel aret arfa arfb arfc arff arft arla arle arr- arra arrc arre arrr arrt arta artc arte artr at-l at-t ataa atab atac atae atal atar atat atca atcc atcf atcl atcr atea atec atee atef atel ater atfb atfc atfe atla atle atra atrc atre atta atte attr baaa baaf baal baar baat baba babb babe babr bac- baca bacc bace bact bael baer bafc baff baft bala balc bale balf ball balt bar- bara barb barc bare barf barr bart bata batc bate batf batt bbbb bbeb bbet bbfc bblb bbrc bcaa bcar bcat bcbc bcca bccc bccl bcec bcer bcet bcfc bcra bctc beaf beal bear beat beba bebb bebe beca beeb beef beel beer beet befa befe beff beft bela bele bell belt bera berc bere berr bert beta betc bete bett bfca bffl bfta bftt blaa blab blac blae blat blbt blea bleb blee blet blfc blrc brab brac brae braf brat brca brcb brce brea breb brec bree bref brel brer bret brfc brrr brtc btaa btaf btcc btcl btec btfc btla btrc btrt bttb caaa caab caac caaf caal caat caba cabe cabf cac- caca cacc cace cacr caec caer cafa cafb cafc cafe caff cafl cala calc cale calf call calt cara carb carc care carf carl carr cart cat- cata catb catc cate catf catt cbac cbal cbar cbat cbbc cbca cbcc cbce cbcl cbcr cbct cbea cbec cbee cbef cber cbet cbfb cbfc cblb cblc cbre cbrl cbrt cbta cbtc cbtf cbtl ccaa ccab ccac ccaf ccar ccat ccba ccbc ccca cccb cccc cccf cccl ccee ccel ccfa ccfc ccff ccfl ccla cclc ccra ccrc ccre ccrf ccrl ccrt cctb cctc cctl cctt ceac ceal cear ceat ceba cec- ceca cece cect ceeb ceec ceel cef- cefa cefc cel- cela celc cele celf cell celt cer- cera cerc cere cerf cerl cert cet- ceta cete cfaa cfab cfac cfae cfar cfbc cfbr cfbt cfca cfcb cfcf cfcl cffb cffr cfra cfrb cfre cfrt cfta cftc cfte cftl cftr clab claf clar clat clea clec clee clef cler clet clra cltb cltc crab crac craf crar crat crbc crca crcc crce crcr cre- crea creb crec cree cret crfc crfl crlf crrt crtc crtf crtl ctab ctae ctal ctba ctca ctcf ctec ctfc ctle ctrc ctrl ctta e-cl e-la eaaf eaba eaca eacc eaec eafb eala ealc eale eara earb eare earl eart eata eate ebac ebal ebba ebbc ebbr ebcc ebel eber ebfc ebla ecaa ecac ecal ecar ecat ecbc ecbe ecca eccb eccc ecce eccl ecct ecef ecfa ecfc ecfr ecla eclt ecra ecrc ecrf ecrl ecrr ect- ecta ectc ectf eeca eeea eeee eefa eefe eefl eele eera eerc eeta eetc eete efab efbr efca efet effa efla eft- efta el-b elab elac elal elar elat elba elbe elca elcb elce elea elec elee elef eler elet elfa elfc elfe elft ella elle elra elta elte eraf eral erat erba erbb erbe erca ercc erce ereb erec erel erer eret erfc erft erla erle erll erra errc erre erta ertl etal etat etbc etbr etcc etec etee etel eter etfa etfb etfc etfe etla etra etre etta ette faaa faac faba fabe faca facc face fact faeb fafa fafc fafe faff fala falc fale fall falt fara farb farc fare farl farr fart fata fatc fate fatf fatt fbar fbla fble fcab fcal fcar fcat fcba fcca fccf fcra feaf feal fear feat feba fece fect feeb feel feer feet fefc fefe feff fela fele felf fell felt fera ferb ferc fere ferr fert feta fete fetr fett ffar ffcc ffee ffff ffrr fftf flab flac flae flat flcl flea flee fler flet frab frac frae frat frbc frcc frea free fret frfc frla frta ft-c ft-l ftea fter ftfc ftlb laaa laac laal laar laat laba labe labr laca lacc lace lacl lact lael laer laet lafb lafc lafe laff laft lala lale lall lara larb larc lare larf larr lart lata latc late latt lbar lbcc lblr lbrt lcac lcat lcbc lcca lccc lcce lcer lcfc lcfr lcra lcrl lctl leaa leaf leal lear leat leba leca lece lect leea leef leel leer leet lefa lefe leff left lela lele lell lera lerc lere lert leta lete lett lfat lfca lfcc llat llcc llef llet lllc llll lrac lral lrat lrba lrfc lrrc lrrr lrta ltac ltae ltbf ltbl ltcc ltee ltfc ltra lttc lttr raab raaf raat raba rabb rabe rabl rac- raca racc race ract raec raef rael raer rafa rafc rafe raff raft rala ralb rale ralf rall ralt rara rarb rare rarf rata rate ratf ratt rbaf rbbb rbbr rbcl rble rcac rcaf rcbc rccb rccc rcet rcfc rcle rctc rea- reac reae reaf real rear reat reba rebb rebe reca recc rece recr rect reeb