a-ak a-be aaaa aaab aaac aaae aaaf aaap aaar aaba aabb aabc aabp aabt aaca aacb aacc aace aacf aack aacp aacr aact aaea aaec aaep aafa aafb aafc aaff aaka aake aapa aapc aapt aara aarc aare aarp aart aata aatc aatf aatk aatt abaa abab abac abae abaf abak abap abar abat abb- abba abbb abbe abbr abbt abca abcb abcc abcf abcp abcr abct abec abee aber abet abff abpa abpc abpp abpr abra abrc abta ac-t acaa acab acac acae acap acar acat acba acca accc acce accf accp acct ace- acea acec acek acer acet acfc acfe acft acke acpa acpe acpr acpt acr- acra acrc acre acrr acta actc acte actf actt aeac aeaf aeap aecb aect aeer aeka aer- aera aerc aeta aetc aetf aetr aett afaa afak afap afar afat afca afcb afcc afee afek afer afet affa affc afft afka afkr afpa afpc afpe afr- afra afrc afre afta aftc afte aftp akaa akae akap akar akca akee aker akka akr- akra akre akte apac apak apap apar apat apba apbr apca apcb apcc apcr apea apec apep aper apet apfa apfc apft apke appa appc appr appt apra aprc apre aprt apta aptc apte aptt arab arac arae araf arak arap arar arat arba arbe arc- arca arce arct area arec aree aref arek arep aret arfa arfb arfc arff arft arka arke arpa arpe arr- arra arrc arre arrk arrr arrt arta artc arte artr at-t ataa atab atac atae atak atap atar atat atca atcc atcf atck atcr atea atec atee atef atep ater atfb atfc atfe atka atkt atpr atra atrc atre atrk atrp atta atte attp attr baaa baaf baak baar baat baba babb babe babr bac- baca bacc bace back bact baek baer bafc baff baft bak- baka bake bakr bakt bapa bapc bape bapp bapt bar- bara barb barc bare barf bark barr bart bata batc bate batf batt bbbb bbeb bbet bbfc bbpr bbrc bcaa bcap bcar bcat bcbc bcbp bcca bccc bcec bcer bcet bcfc bcpp bcra bctc beaf beak beap bear beat beba bebb bebe beca beck beeb beef beek beep beer beet befa befe beff beft beka beke bera berc bere berk berr bert beta betc bete bett bfca bfpp bfta bftt bkpr bkpt bpcp bpea bpfc bprc bptf brab brac brae braf brak brat brca brcb brce brea breb brec bree bref brek brep brer bret brfc brka brkb brrr brtc btaa btaf btbp btcc btec btek btfc btrc btrt bttb caaa caab caac caaf caap caat caba cabe cabf cac- caca cacc cace cack cacr caec caer cafa cafb cafc cafe caff caka cake capa capb capc cape capp capt cara carb carc care carf cark carp carr cart cat- cata catb catc cate catf catt cbac cbar cbat cbbc cbca cbcc cbce cbcp cbcr cbct cbea cbec cbee cbef cber cbet cbfb cbfc cbka cbkr cbpc cbpp cbre cbrt cbta cbtc cbtf ccaa ccab ccac ccaf ccap ccar ccat ccba ccbc ccca cccb cccc cccf cccp ccee ccfa ccfc ccff ccpa ccpe ccpp ccpr ccra ccrc ccre ccrf ccrp ccrt cctb cctc cctt ceac cear ceat ceba cebp cec- ceca cece cecp cect ceeb ceec cef- cefa cefc ceke cepa cepc cepe cepp cepr cept cer- cera cerc cere cerf cerp cert cet- ceta cete cetp cfaa cfab cfac cfae cfar cfbc cfbr cfbt cfca cfcb cfcf cffb cffr cfpa cfpr cfra cfrb cfre cfrp cfrt cfta cftc cfte cftk cftr ckac ckat ckbc ckbe ckck cker ckfr ckpc ckpr ckrc cktb cpaa cpac cpaf cpap cpbc cpca cpce cpea cpeb cpep cper cpff cpft cppa cpre cprt cptp cptr crab crac craf crap crar crat crbc crca crcc crce crcr cre- crea creb crec cree crep cret crfc crkc crkp crpc crrt crtc crtf crtp ctab ctae ctba ctca ctcf ctcp ctec ctep ctfc ctpp ctrc ctrp ctta eaaf eaba eaca eacc eaec eafb eapc eapp eara earb eare earp eart eata eate ebac ebba ebbc ebbr ebcc eber ebfc ecaa ecac ecar ecat ecbc ecbe ecca eccb eccc ecce ecct ecef ecfa ecfc ecfr ecka ecpa ecpp ecra ecrc ecrf ecrr ect- ecta ectc ectf eeca eeea eeee eefa eefe eeka eeke eera eerc eeta eetc eete efab efbr efca efet effa efke efpa eft- efta eftp eka- ekab ekeb ekek eker eket ekfc ekka ekpe ekta epaa epac epcc epec epee eper epfa epfc eppa eppc eppp epra eprb eprp epta epte eraf erap erat erba erbb erbe erca ercc erce ercp ereb erec erer eret erfc erft erke erpa erpe erra errc erre erta etak etap etat etbc etbr etcc etec etee eter etfa etfb etfc etfe etka etra etre etta ette f--k faaa faac faap faba fabe faca facc face fack facp fact faeb fafa fafc fafe faff fake fakt fapa fape fapp fara farb farc fare fark farp farr fart fata fatc fate fatf fatt fbar fcab fcap fcar fcat fcba fcca fccf fccp fcpa fcra feaf feak feap fear feat feba fece feck fect feeb feek feer feet fefc fefe feff feke fepa fepc fera ferb ferc fere ferk ferr fert feta fete fetp fetr fett ffar ffcc ffee ffff ffrr fftf fkab fkbp fp-c fpaa fpcc fpct fpra fprf frab frac frae frak frap frat frbc frcc frcp frea free frep fret frfc frta ft-c ftea fter ftfc ftpe kaaa kaab kaaf kaak kaap kaar kaat kaba kabb kabc kabe kabf kabr kacb kacc kace kacp kact kaep kaer kaet kafa kafc kafe kaff kafp kafr kaka kakc kake kakk kakt kap- kapa kapc kape kapf kapp kapt kara karb kare karf kark karp karr kart kat- kata katb katc kate katf katk katp katr katt kbaa kbab kbac kbae kbak kbap kbar kbat kbba kbbb kbbc kbbe kbbf kbbk kbbr kbbt kbca kbcb kbce kbck kbcr kbct kbeb kbec kbee kbef kbek kber kbet kbfb kbfc kbff kbfk kbfp kbfr kbft kbkb kbkf kbkk kbkr kbpa kbpc kbpe