-er a-a a-b aaa aab aad aae aak aar aau ab- aba abb abd abe abk abr abu ad- ada adb add ade adk adr adu aea aeb aed aee aek aer aeu aka akb akd ake akk akr aku ar- ara arb ard are ark arr aru au- aua aub aud aue auk aur b-u baa bab bad bae bak bar bau bba bbb bbd bbe bbk bbr bbu bda bdb bdd bde bdk bdr bdu be- bea beb bed bee bek ber beu bka bkb bke bkk bkr bra brb brd bre brk brr bru bua bub bud bue buk bur buu daa dab dad dae dak dar dau dba dbb dbd dbe dbk dbr dbu dda ddb ddd dde ddk ddr ddu de- dea deb ded dee dek der deu dka dkb dke dkk dkr dku dra drb drd dre drk drr dru dua dub dud due duk dur eaa eab ead eae eak ear eau eba ebb ebd ebe ebk ebr ebu ed- eda edb edd ede edk edr edu eea eeb eed eee eek eer eka ekb ekd eke ekr eku era erb erd ere erk err eru eu- eua eub eud eue eur ka- kaa kab kad kae kak kar kau kba kbb kbd kbe kbk kbr kbu kda kdb kde kdk kdr kdu ke- kea keb ked kee kek ker kkb kke kkk kkr kku kra krd krk krr kru kub kud kue kuk kur kuu ra- raa rab rad rae rak rar rau rba rbb rbd rbe rbk rbr rbu rda rdb rdd rde rdr rdu re- rea reb red ree rek rer reu rkb rke rkk rku rra rrb rrd rrk rrr rru rua rub rud rue ruk rur ruu ua- uaa uab uad uae uak uar uau uba ubb ube ubk ubr ubu uda udb udd ude udk udr udu uea ueb ued uee uer uka ukb uke ukk ukr uku ur- ura urb urd ure urk urr uru uua uue uur uuu

a-ak a-be aaaa aaab aaad aaae aaar aaba aabb aabd aada aade aadu aaea aaka aake aaku aara aard aare aaru abaa abab abad abae abak abar abau abb- abba abbb abbe abbr abda abdu abed abee aber abra abua abud abue abuk adaa adab adad adae adak adar adba adda addd adde addr addu adea adeb adee ader adra adre adua adub adue aduk adur aede aeer aeka aer- aera aerd akaa akae akar aked akee aker akeu akka akku akr- akra akre akua arab arad arae arak arar arau arba arbe arda arde ardu area ared aree arek areu arka arke arr- arra arre arrk arrr arru arua arub arud arue auaa aube aude auer auke aur- aura aurd aure baaa baad baak baar baba babb babe babr babu bada badb badd bade badr badu baed baek baer bak- baka bake bakr baku bar- bara barb bard bare bark barr baru bau- baud bauk baur bbad bbau bbbb bbdd bbeb bd-r bead beak bear beau beba bebb bebe beda bede bedu beeb beed beek beer beka beke bera berd bere berk berr beru beuk beur brab brad brae brak brau brda brea breb bred bree brek brer brka brkb brrr brud brue buad buar buba bubb bube bubu buda budb budd bude budu buea buer bueu buka buke bukk buku bur- bura burb burd bure burk burr buru daab daad daae daar daau daba dabb dabu dada dade dadu daeb daer daeu daka dake daku dara darb dard dare dark darr daru daub daud daue dauk daur dbar dddd ddre ddub dead deae deak dear deau deba debe debu deda dedd dede dedu deeb deed deek deer dek- deka deke der- dera derb dere derk derr deua deue deuk deur dkba draa drab drad drak drar drau drba drda drea dred dree drek drra drua drub drue druk druu duaa duab duad duar dub- duba dubb dube dubu duda dudd dude dudu duer duka duke duku dura dure durk duru duur eaba eada eadb eadd eara earb eard eare ebba ebbr ebed eber ebru ebur edad edar edda edde ede- edea eder edra edru edur eede eedu eeea eeee eeka eeke eera eka- ekab ekeb eked ekek eker ekka ekur erad erau erba erbb erbe erda erde ereb ered erer erke erra erre erua erub erur euba eude euer eur- eura eure kaaa kaab kaak kaar kaba kabb kabd kabe kabr kabu kad- kada kadd kade kadr kadu kaer kaka kake kakk kaku kara karb kard kare kark karr karu kau- kaub kaud kaue kauk kaur kbaa kbab kbad kbae kbak kbar kbba kbbb kbbd kbbe kbbk kbbr kbbu kbdb kbde kbdr kbeb kbed kbee kbek kber kbkb kbkk kbkr kbra kbrb kbrd kbre kbrk kbru kbua kbub kbud kbue kbuk kbur kbuu kdaa kdab kdad kdae kdak kdar kdbb kdbr kddb kddd kddk kddr kdeb kdka kdkb kdkd kdkk kdkr kdrb kdub kdur kea- kead keak kear keau keba kebb kebe kebr kebu keda kedb kedd kede kedr keed keek keer keka kekb keke keku ker- kera kerb kere kerk kerr keru keur kkaa kkar kkba kkbb kkbd kkbe kkbr kkda kkdd kkea kked kkkk kkrb kkre kkrk kkrr kkua kkuu krab krad krae krak krar krba krbb krbd krbe krbk krbr krda krdd krde krdr krdu krea kreb kred kree krek kreu krka krkd krke krkk krkr krku krrb krre krrk krrr krua krue kruk krur kuar kuau kuba kubb kubd kube kubr kubu kuda kudd kude kudu kued kuek kueu kuka kuke kukk kuku kura kurb kurd kure kurk kurr kuru kuub kuuk kuur kuuu raab raad raak raba rabb rabe rabk rabu rada radd rade radr radu raed raer raka rake rakk raku rara rarb rare rark raua raub raud raue rauk rbbb rbbr rder rea- read reae reak rear reau reba rebb rebe rebk rebu reda redd rede redr redu reeb reed reek reka reke rera rerd rere reru reue reuk reuu rrad rred rrrr ruad ruba rubb rube rubu