a-ak a-be aaaa aaab aaac aaae aaap aaar aaba aabb aabc aabp aabt aaca aacb aacc aace aack aacp aacr aact aaea aaec aaep aaka aake aapa aapc aapt aara aarc aare aarp aart aata aatc aatk aatt abaa abab abac abae abak abap abar abat abax abb- abba abbb abbe abbr abbt abca abcb abcc abcp abcr abct abec abee aber abet abpa abpc abpp abpr abra abrc abta ac-t acaa acab acac acae acap acar acat acba acca accc acce accp acct ace- acea acec acek acer acet acke acpa acpe acpr acpt acr- acra acrc acre acrr acta actc acte actt aeac aeap aecb aect aeer aeka aer- aera aerc aeta aetc aetr aett aetx akaa akae akap akar akca akee aker akka akr- akra akre akte apac apak apap apar apat apax apba apbr apca apcb apcc apcr apea apec apep aper apet apex apke appa appc appr appt appx apra aprc apre aprt apta aptc apte aptt aptx arab arac arae arak arap arar arat arax arba arbe arc- arca arce arct area arec aree arek arep aret arex arka arke arpa arpe arr- arra arrc arre arrk arrr arrt arta artc arte artr artx at-t at-x ataa atab atac atae atak atap atar atat atax atca atcc atck atcr atea atec atee atep ater atex atka atkt atpr atra atrc atre atrk atrp atrx atta atte attp attr axar axat axce axer ba-x baaa baak baar baat baba babb babe babr bac- baca bacc bace back bact baek baer bak- baka bake bakr bakt bapa bapc bape bapp bapt bar- bara barb barc bare bark barr bart barx bata batc bate batt baxt bbbb bbeb bbet bbpr bbrc bcaa bcap bcar bcat bcbc bcbp bcca bccc bcec bcer bcet bcpp bcra bctc beak beap bear beat beba bebb bebe beca beck beeb beek beep beer beet beka beke bera berc bere berk berr bert beta betc bete bett bkpr bkpt bpcp bpea bprc brab brac brae brak brat brax brca brcb brce brea breb brec bree brek brep brer bret brex brka brkb brrr brtc btaa btbp btcc btcx btec btek btex btrc btrt bttb caaa caab caac caap caat caba cabe cac- caca cacc cace cack cacr caec caer caex caka cake capa capb capc cape capp capt capx cara carb carc care cark carp carr cart carx cat- cata catb catc cate catt caxa cbac cbar cbat cbax cbbc cbca cbcc cbce cbcp cbcr cbct cbea cbec cbee cber cbet cbka cbkr cbpc cbpp cbre cbrt cbta cbtc cbxa ccaa ccab ccac ccap ccar ccat ccba ccbc ccca cccb cccc cccp ccee ccpa ccpe ccpp ccpr ccra ccrc ccre ccrp ccrt cctb cctc cctt ceac cear ceat ceba cebp cec- ceca cece cecp cect ceeb ceec ceke cepa cepc cepe cepp cepr cept cer- cera cerc cere cerp cert cet- ceta cete cetp cexe ckac ckat ckbc ckbe ckbx ckck ckcx cker ckpc ckpr ckrc cktb cpaa cpac cpap cpbc cpca cpce cpea cpeb cpep cper cppa cpre cprt cptp cptr crab crac crap crar crat crax crbc crca crcc crce crcr cre- crea creb crec cree crep cret crex crkc crkp crpc crrt crtc crtp ctab ctae ctba ctca ctcp ctec ctep ctpp ctrc ctrp ctta cxxx eaba eaca eacc eaec eapc eapp eara earb eare earp eart eata eate ebac ebba ebbc ebbr ebcc eber ecaa ecac ecar ecat ecbc ecbe ecca eccb eccc ecce ecct ecka ecpa ecpp ecra ecrc ecrr ect- ecta ectc eeca eeea eeee eeka eeke eera eerc eeta eetc eete eext eka- ekab ekeb ekek eker eket ekka ekpe ekta epaa epac epcc epec epee eper eppa eppc eppp epra eprb eprp epta epte epxp er-x erap erat erba erbb erbe erca ercc erce ercp ereb erec erer eret erke erpa erpe erra errc erre erta etak etap etat etbc etbr etcc etec etee eter etka etra etre etta ette exa- exec exer expr expt exrx exta exte extr kaaa kaab kaak kaap kaar kaat kaba kabb kabc kabe kabr kacb kacc kace kacp kact kaep kaer kaet kaka kakc kake kakk kakt kakx kap- kapa kapc kape kapp kapt kara karb kare kark karp karr kart karx kat- kata katb katc kate katk katp katr katt katx kaxa kaxe kbaa kbab kbac kbae kbak kbap kbar kbat kbba kbbb kbbc kbbe kbbk kbbr kbbt kbca kbcb kbce kbck kbcr kbct kbeb kbec kbee kbek kber kbet kbex kbkb kbkk kbkr kbpa kbpc kbpe kbpk kbpr kbpt kbra kbrb kbrc kbre kbrk kbrt kbrx kbta kbtb kbtc kbte kbtk kbtr kbtt kbxb kbxr kbxt kbxx kc-x kcaa kcab kcac kcap kcar kcat kcba kcbc kcbk kcbr kcbx kcca kccb kccc kcck kccr kcct kcea kceb kcec kcee kcep kcet kckc kckk kckr kckx kcpa kcpc kcpr kcpt kcpx kcrc kcrp kcrr kcrt kcrx kcta kctb kctc kcte kctx kcxr kea- keak keap kear keat keba kebb kebc kebe kebr kebt keca keck kecr keek keep keer keet keka kekb kekc keke kep- kepa kepc kepe kept kepx ker- kera kerb kerc kere kerk kerp kerr kert kerx ket- keta ketc kete ketk ketp ketr kett ketx kexa kexb kexx kkaa kkac kkap kkar kkat kkba kkbb kkbe kkbr kkbt kkcb kkck kkcr kkct kkea kkex kkkk kkpc kkpk kkpt kkrb kkrc kkre kkrk kkrr kkrt kkrx kktc kktk kktx kkxa kkxk kkxt kkxx kpac kpae kpak kpar kpat kpax kpba kpbb kpbe kpbr kpbx kpcc kpcr kpek kper kpet kpke kpkk kpkr kpkx kppc kppk kppp kppr kprb kprc kpre kprk kprp kprr kprt kpte kptr kptt kptx kpxp kpxr krab krac krae krak krap krar krat krba krbb krbe krbk krbr krbt krbx krca krcb krcc krce krea kreb krec kree krek kret krex krka krkc krke krkk krkr krkx krpa krpr krpt krpx krrb krrc krre krrk krrr krrt krrx krta krtc krtk krtr krtx krxa krxb krxk krxp krxr krxt krxx ktaa ktae ktak ktap ktar ktat ktba ktbb ktbc ktbr ktbt