-er a-a a-b a-t aaa aab aad aae aak aar aat ab- aba abb abd abe abk abr abt ad- ada adb add ade adk adr adt aea aeb aed aee aek aer aet aka akb akd ake akk akr ar- ara arb ard are ark arr art at- ata atb atd ate atr att baa bab bad bae bak bar bat bba bbb bbd bbe bbk bbr bbt bda bdb bdd bde bdk bdr bdt be- bea beb bed bee bek ber bet bka bkb bke bkk bkr bkt bra brb brd bre brk brr brt bta btb btd bte btk btr btt daa dab dad dae dak dar dat dba dbb dbd dbe dbk dbr dbt dda ddb ddd dde ddk ddr ddt de- dea deb ded dee dek der det dka dkb dke dkk dkr dkt dra drb drd dre drk drr drt dta dtb dtd dte dtk dtr dtt eaa eab ead eae eak ear eat eba ebb ebd ebe ebk ebr ebt ed- eda edb edd ede edk edr edt eea eeb eed eee eek eer eet eka ekb ekd eke ekr ekt era erb erd ere erk err ert eta etb etd ete etk etr ett k-t ka- kaa kab kad kae kak kar kat kba kbb kbd kbe kbk kbr kda kdb kde kdk kdr kdt ke- kea keb ked kee kek ker ket kkb kke kkk kkr kkt kra krd krk krr krt kta ktb kte ktk ktr ktt ra- raa rab rad rae rak rar rat rba rbb rbd rbe rbk rbr rbt rda rdb rdd rde rdr rdt re- rea reb red ree rek rer ret rkb rke rkk rkt rra rrb rrd rrk rrr rrt rta rtb rtd rte rtk rtr rtt taa tab tad tae tak tar tat tba tbb tbd tbe tbk tbr tbt tda tdb tdd tde tdk tdr tdt te- tea teb ted tee tek ter tet tka tkb tke tkk tkr tkt tra trb trd tre trk trr trt tta ttb ttd tte ttk ttr ttt

a-ak a-be aaaa aaab aaad aaae aaar aaba aabb aabd aabt aada aade aadt aaea aaka aake aara aard aare aart aata aatk aatt abaa abab abad abae abak abar abat abb- abba abbb abbe abbr abbt abda abed abee aber abet abra abta adaa adab adad adae adak adar adat adba adda addd adde addr adea adeb adee ader adet adra adre adta aede aedt aeer aeka aer- aera aerd aeta aetr aett akaa akae akar aked akee aker akka akr- akra akre akte arab arad arae arak arar arat arba arbe arda arde area ared aree arek aret arka arke arr- arra arre arrk arrr arrt arta arte artr at-t ataa atab atad atae atak atar atat atdt atea ated atee ater atka atkt atra atre atrk atta atte attr baaa baad baak baar baat baba babb babe babr bada badb badd bade badr baed baek baer bak- baka bake bakr bakt bar- bara barb bard bare bark barr bart bata bate batt bbad bbbb bbdd bbeb bbet bd-r bead beak bear beat beba bebb bebe beda bede beeb beed beek beer beet beka beke bera berd bere berk berr bert beta bete bett brab brad brae brak brat brda brdt brea breb bred bree brek brer bret brka brkb brrr btaa btdt btek btrt bttb daab daad daae daar daba dabb dabt dada dade daeb daer daka dake dara darb dard dare dark darr dart data date datr datt dbar dbtt dddd ddre dead deae deak dear deba debe debt deda dedd dede deeb deed deek deer deet dek- deka deke der- dera derb dere derk derr deta dete detk detr dkba draa drab drad drak drar drat drba drda drea dred dree drek dret drra dtaa dted dtek eaba eada eadb eadd eara earb eard eare eart eata eate ebba ebbr ebed eber edad edar edda edde ede- edea eder edra edta eede eeea eeee eeka eeke eera eeta eete eka- ekab ekeb eked ekek eker eket ekka ekta erad erat erba erbb erbe erda erde ereb ered erer eret erke erra erre erta etak etat etbr etee eter etka etra etre etta ette kaaa kaab kaak kaar kaat kaba kabb kabd kabe kabr kad- kada kadd kade kadr kadt kaer kaet kaka kake kakk kakt kara karb kard kare kark karr kart kat- kata katb katd kate katk katr katt kbaa kbab kbad kbae kbak kbar kbat kbba kbbb kbbd kbbe kbbk kbbr kbbt kbdb kbde kbdr kbeb kbed kbee kbek kber kbet kbkb kbkk kbkr kbra kbrb kbrd kbre kbrk kbrt kbta kbtb kbte kbtk kbtr kbtt kdaa kdab kdad kdae kdak kdar kdat kdbb kdbr kddb kddd kddk kddr kdeb kdet kdka kdkb kdkd kdkk kdkr kdkt kdrb kdta kdtd kdtr kea- kead keak kear keat keba kebb kebe kebr kebt keda kedb kedd kede kedr kedt keed keek keer keet keka kekb keke ker- kera kerb kere kerk kerr kert ket- keta ketd kete ketk ketr kett kkaa kkar kkat kkba kkbb kkbd kkbe kkbr kkbt kkda kkdd kkdt kkea kked kkkk kkrb kkre kkrk kkrr kkrt kktk krab krad krae krak krar krat krba krbb krbd krbe krbk krbr krbt krda krdd krde krdr krea kreb kred kree krek kret krka krkd krke krkk krkr krrb krre krrk krrr krrt krta krtk krtr ktaa ktae ktak ktar ktat ktba ktbb ktbr ktbt ktdb ktdd ktde ktdk ktdr ktea kted ktee ktek ktkb ktke ktkk ktkr ktkt ktrb ktre ktrk ktrr ktrt kttk kttr kttt raab raad raak raat raba rabb rabe rabk rada radd rade radr radt raed raer raka rake rakk rakt rara rarb rare rark rata rate ratk ratt rbbb rbbr rder rea- read reae reak rear reat reba rebb rebe rebk reda redd rede redr reeb reed reek reet reka reke rekt rera rerd rere rert reta retd rete retr rett rrad rrat rred rrrr rtdt rtee taa- taar taat taba tabb tabe tada tade taer