-er a-a a-b a-i aaa aab aad aae aai aar aau ab- aba abb abd abe abi abr abu ad- ada adb add ade adi adr adu aea aeb aed aee aei aer aeu ai- aia aib aid aie aii air aiu ar- ara arb ard are ari arr aru au- aua aub aud aue aui aur b-u baa bab bad bae bai bar bau bba bbb bbd bbe bbi bbr bbu bda bdb bdd bde bdi bdr bdu be- bea beb bed bee bei ber beu bi- bia bib bid bie bii bir biu bra brb brd bre bri brr bru bua bub bud bue bui bur buu daa dab dad dae dai dar dau dba dbb dbd dbe dbi dbr dbu dda ddb ddd dde ddi ddr ddu de- dea deb ded dee dei der deu di- dia dib did die dii dir diu dra drb drd dre dri drr dru dua dub dud due dui dur eaa eab ead eae eai ear eau eba ebb ebd ebe ebi ebr ebu ed- eda edb edd ede edi edr edu eea eeb eed eee eer eia eib eid eie eii eir eiu era erb erd ere eri err eru eu- eua eub eud eue eui eur i-d ia- iaa iab iad iae iai iar iau iba ibb ibd ibe ibi ibr ibu ida idb idd ide idi idr idu ie- iea ied iee iei ier iia iib iid iie iii iir iiu ir- ira irb ird ire iri irr iru iu- iua iub iud iue iui iur ra- raa rab rad rae rai rar rau rba rbb rbd rbe rbi rbr rbu rda rdb rdd rde rdi rdr rdu re- rea reb red ree rei rer reu ria rib rid rie rii rir rra rrb rrd rri rrr rru rua rub rud rue rui rur ruu ua- uaa uab uad uae uai uar uau uba ubb ube ubi ubr ubu uda udb udd ude udi udr udu uea ueb ued uee uei uer uia uib uid uie uii uir uiu ur- ura urb urd ure uri urr uru uua uue uur uuu

a-be a-ii aaaa aaab aaad aaae aaai aaar aaba aabb aabd aabi aada aade aadi aadu aaea aaib aaii aara aard aare aari aaru abaa abab abad abae abai abar abau abb- abba abbb abbe abbi abbr abda abdi abdu abed abee aber abia abib abid abie abir abiu abra abri abua abud abue adaa adab adad adae adai adar adba adbi adda addd adde addi addr addu adea adeb adee ader adia adib adie adir adra adre adua adub adue adur aebi aede aeer aer- aera aerd aeri aiai aiba aida aidb aide aidi aidr aidu aiea aiee aiia aiib aiid aiir aira aird aire airi aiud aiui arab arad arae arai arar arau arba arbe arbi arda arde ardi ardu area ared aree arei areu aria arib arid arie arii arr- arra arre arri arrr arru arua arub arud arue arui auaa aube aude audi auer aur- aura aurd aure auri ba-i baaa baad baar baba babb babe babi babr babu bada badb badd bade badi badr badu baed baer baia baib baid baie bair bar- bara barb bard bare bari barr baru bau- baud baur bbad bbau bbbb bbdd bbeb bd-r bdii bead bear beau beba bebb bebe bebi beda bede bedi bedu beeb beed beer beia beir bera berd bere beri berr beru beur biad biar biba bibb bibe bibi bida bide bidi bidr bidu bieb bied bier bieu bira birb bird bire biri birr biru brab brad brae brai brau brda brea breb bred bree brei brer bria brid brie brrr brud brue buad buar buba bubb bube bubi bubu buda budb budd bude budi budu buea buer bueu buid buie buir buiu bur- bura burb burd bure buri burr buru daab daad daae daar daau daba dabb dabu dada dade dadi dadu daeb daer daeu daia daid daie dair dara darb dard dare dari darr daru daub daud daue daur dbar dddd ddie ddre ddub dead deae dear deau deba debe debi debu deda dedd dede dedi dedu deeb deed deer deid deie deir der- dera derb dere deri derr deua deue deur dia- diab diad diar diba dibb dibe dida dide didi didu diea dieb died dier dieu diii dira dird dire dirr draa drab drad drar drau drba drda drea dred dree drei drib drie drra drua drub drue drui druu duaa duab duad duar dub- duba dubb dube dubu duda dudd dude dudu duer duid duir dura dure duri duru duur eaba eada eadb eadd eadi eaiu eara earb eard eare ebba ebbr ebed eber ebid ebru ebur edad edar edda edde eddi ede- edea edei eder edia edie edra edru edur eede eedu eeea eeee eera eid- eide eidi eidr eidu eied eiei eier eira eird eire erad erau erba erbb erbe erda erde erdi ereb ered erei erer eria erie eriu erra erre erua erub erur euba eubi eude euer eur- eura eure i-be iaaa iaai iaba iadb iaea iaia iara iare iaru ibad ibar ibea ibed ibia ibid ibie ibra ibrd ibri idad idae idar idbe idda idea ided idee ider idia idid idie idir idra idre idub iedr ieie iera iere ieri ieud iida iide iied iiie iiii iira irad irae irai irar irbe irda ired iree irer iri- iria irid irie irra irre irri iuiu iura raab raad raba rabb rabe rabi rabu rada radd rade radr radu raed raer raia raid raie raii rair raiu rara rarb rare rari raua raub raud raue rbbb rbbr rder rea- read reae rear reau reba rebb rebe rebu reda redd rede redi redr redu reeb reed reia reid reii reir reiu rera rerd rere reri reru reue reuu riaa riab riad riai riau rib- riba ribe ribu rida ridd ride ridi ried rier rieu riia rire riri riue rrad rred rrrr ruad ruba rubb rube rubi rubu ruda rudd rude rudi rued ruer ruid rura