a-ak a-be aaaa aaab aaae aaap aaar aaba aabb aabp aabt aaea aaep aaka aake aapa aapt aara aare aarp aart aata aatk aatt abaa abab abae abak abap abar abat abb- abba abbb abbe abbr abbt abee aber abet abpa abpp abpr abra abta aeap aeer aeka aer- aera aeta aetr aett akaa akae akap akar akee aker akka akr- akra akre akte apak apap apar apat apba apbr apea apep aper apet apke appa appr appt apra apre aprt apta apte aptt arab arae arak arap arar arat arba arbe area aree arek arep aret arka arke arpa arpe arr- arra arre arrk arrr arrt arta arte artr at-t ataa atab atae atak atap atar atat atea atee atep ater atka atkt atpr atra atre atrk atrp atta atte attp attr baaa baak baar baat baba babb babe babr baek baer bak- baka bake bakr bakt bapa bape bapp bapt bar- bara barb bare bark barr bart bata bate batt bbbb bbeb bbet bbpr beak beap bear beat beba bebb bebe beeb beek beep beer beet beka beke bera bere berk berr bert beta bete bett bkpr bkpt bpea brab brae brak brat brea breb bree brek brep brer bret brka brkb brrr btaa btbp btek btrt bttb eaba eapp eara earb eare earp eart eata eate ebba ebbr eber eeea eeee eeka eeke eera eeta eete eka- ekab ekeb ekek eker eket ekka ekpe ekta epaa epee eper eppa eppp epra eprb eprp epta epte erap erat erba erbb erbe ereb erer eret erke erpa erpe erra erre erta etak etap etat etbr etee eter etka etra etre etta ette kaaa kaab kaak kaap kaar kaat kaba kabb kabe kabr kaep kaer kaet kaka kake kakk kakt kap- kapa kape kapp kapt kara karb kare kark karp karr kart kat- kata katb kate katk katp katr katt kbaa kbab kbae kbak kbap kbar kbat kbba kbbb kbbe kbbk kbbr kbbt kbeb kbee kbek kber kbet kbkb kbkk kbkr kbpa kbpe kbpk kbpr kbpt kbra kbrb kbre kbrk kbrt kbta kbtb kbte kbtk kbtr kbtt kea- keak keap kear keat keba kebb kebe kebr kebt keek keep keer keet keka kekb keke kep- kepa kepe kept ker- kera kerb kere kerk kerp kerr kert ket- keta kete ketk ketp ketr kett kkaa kkap kkar kkat kkba kkbb kkbe kkbr kkbt kkea kkkk kkpk kkpt kkrb kkre kkrk kkrr kkrt kktk kpae kpak kpar kpat kpba kpbb kpbe kpbr kpek kper kpet kpke kpkk kpkr kppk kppp kppr kprb kpre kprk kprp kprr kprt kpte kptr kptt krab krae krak krap krar krat krba krbb krbe krbk krbr krbt krea kreb kree krek kret krka krke krkk krkr krpa krpr krpt krrb krre krrk krrr krrt krta krtk krtr ktaa ktae ktak ktap ktar ktat ktba ktbb ktbr ktbt ktea ktee ktek ktep ktkb ktke ktkk ktkr ktkt ktpa ktpk ktpr ktpt ktrb ktre ktrk ktrp ktrr ktrt kttk kttp kttr kttt paak paap paar paat paba pabt paea paep paer paka pake papa papb pape papp papr par- para pare park parp parr part pata pate patr patt pbar pbpa pbpk peab peak peap pear peat peba peek peep peer peet peka peke pekk pepa pepe per- pera pere perk perp perr pert peta pete petr pett ppap ppar pper pppa pppp ppta pptt prae prar prat pre- preb pree prek prep pret prtp prtr ptab ptak pter pttk raab raak raat raba rabb rabe rabk raep raer raka rake rakk rakt rapa rape rapp rapt rara rarb rare rark rata rate ratk ratp ratt rbbb rbbr rea- reae reak reap rear reat reba rebb rebe rebk reeb reek reep reet reka reke rekt repe repp repr rept rera rere rert reta rete retr rett rpet rpta rrat rrrr rtee rtpa rttp taa- taar taat taba tabb tabe taer taka take takk takt tapa tape tapp tapr tapt tara tarb tare tark tarp tarr tart tata tatb tate tatr tatt tbar tbrb tbta tbtp teak tear teat teba teek teer teet teka teke tepa tepe tepp ter- tera tere terk terp terr teta tete tetr tett tpap tper tpke tppa tppp tppr tpte tptp tptr traa trab trae trak trap trat tre- trea tree trek tret trpa trpe trpp trra trte trtr ttab ttbb tter tttt