a-ak a-be aaaa aaab aaad aaae aaap aaba aabb aabd aabp aabt aada aade aadt aaea aaep aaka aake aapa aapt aata aatk aatt abaa abab abad abae abak abap abat abb- abba abbb abbe abbt abda abed abee abet abpa abpd abpp abta adaa adab adad adae adak adap adat adba adda addd adde adea adeb adee adet adp- adta aeap aede aedt aeka aeta aett akaa akae akap aked akee akka akte apak apap apat apba apda apdd apea aped apep apet apke appa appd appt apta apte aptt at-t ataa atab atad atae atak atap atat atdt atea ated atee atep atka atkt atta atte attp baaa baad baak baat baba babb babe bada badb badd bade baed baek bak- baka bake bakt bapa bape bapp bapt bata bate batt bbad bbbb bbdd bbeb bbet bead beak beap beat beba bebb bebe beda bede beeb beed beek beep beet beka beke beta bete bett bkpt bpda bpea btaa btbp btdt btek bttb daab daad daae daap daba dabb dabp dabt dada dade daeb daka dake dapa dape dapp data date datp datt dbpd dbtt dddd dead deae deak deap deba debe debt deda dedd dede deeb deed deek deep deet dek- deka deke depa depe depp dept deta dete detk dkba dpaa dpdt dppa dtaa dtap dtdp dted dtek dttp eaba eada eadb eadd eadp eapp eata eate ebba ebed edad edda edde eddp ede- edea edta eede eeea eeee eeka eeke eeta eete eka- ekab ekeb eked ekek eket ekka ekpe ekta epaa epad epee eppa eppp epta epte etak etap etat etee etka etta ette kaaa kaab kaak kaap kaat kaba kabb kabd kabe kad- kada kadd kade kadt kaep kaet kaka kake kakk kakt kap- kapa kape kapp kapt kat- kata katb katd kate katk katp katt kbaa kbab kbad kbae kbak kbap kbat kbba kbbb kbbd kbbe kbbk kbbt kbdb kbde kbeb kbed kbee kbek kbet kbkb kbkk kbpa kbpe kbpk kbpt kbta kbtb kbte kbtk kbtt kdaa kdab kdad kdae kdak kdap kdat kdbb kddb kddd kddk kdeb kdep kdet kdka kdkb kdkd kdkk kdkt kdta kdtd kdtp kea- kead keak keap keat keba kebb kebe kebt keda kedb kedd kede kedp kedt keed keek keep keet keka kekb keke kep- kepa kepd kepe kept ket- keta ketd kete ketk ketp kett kkaa kkap kkat kkba kkbb kkbd kkbe kkbt kkda kkdd kkdt kkea kked kkkk kkpk kkpt kktk kpad kpae kpak kpat kpba kpbb kpbd kpbe kpda kpdb kpek kpet kpke kpkk kppd kppk kppp kptd kpte kptt ktaa ktae ktak ktap ktat ktba ktbb ktbt ktdb ktdd ktde ktdk ktea kted ktee ktek ktep ktkb ktke ktkk ktkt ktpa ktpk ktpt kttk kttp kttt paak paap paat paba pabt pada padd pade paea paep paka pake papa papb pape papp pata patd pate patt pbed pbpa pbpk pdea pdpa peab peak peap peat peba ped- peda pede peed peek peep peet peka peke pekk pepa pepd pepe peta pete pett ppad ppap ppdk pppa pppd pppp ppta pptt ptab ptak ptpd pttk taa- taat taba tabb tabe tada tade taka take takk takt tapa tape tapp tapt tata tatb tate tatt tbta tbtp tdap tddb tdkp tead teak teat teba teda tedd tede tedk teed teek teet teka teke tepa tepe tepp teta tete tett tpap tped tpke tppa tppd tppp tpte tptp ttab ttbb tttt