-er a-a a-b aaa aab aad aae aam aar aau ab- aba abb abd abe abm abr abu ad- ada adb add ade adm adr adu aea aeb aed aee aem aer aeu ama amb amd ame amm amr amu ar- ara arb ard are arm arr aru au- aua aub aud aue aum aur b-u baa bab bad bae bam bar bau bba bbb bbd bbe bbm bbr bbu bda bdb bdd bde bdm bdr bdu be- bea beb bed bee bem ber beu bma bmb bmd bme bmm bmr bmu bra brb brd bre brm brr bru bua bub bud bue bum bur buu daa dab dad dae dam dar dau dba dbb dbd dbe dbm dbr dbu dda ddb ddd dde ddm ddr ddu de- dea deb ded dee dem der deu dma dmb dmd dme dmm dmr dmu dra drb drd dre drm drr dru dua dub dud due dum dur eaa eab ead eae eam ear eau eba ebb ebd ebe ebm ebr ebu ed- eda edb edd ede edm edr edu eea eeb eed eee eem eer em- ema emb emd eme emm emr emu era erb erd ere erm err eru eu- eua eub eud eue eur m-r maa mab mad mae mam mar mau mba mbb mbd mbe mbm mbr mbu mda mdb mdd mde mdm mdr mdu mea meb med mee mem mer meu mma mmb mmd mme mmm mmr mmu mra mrb mrd mre mrm mrr mru mua mub mud mue mum mur muu ra- raa rab rad rae ram rar rau rba rbb rbd rbe rbm rbr rbu rda rdb rdd rde rdm rdr rdu re- rea reb red ree rem rer reu rma rmb rmd rme rmm rmr rra rrb rrd rrm rrr rru rua rub rud rue rum rur ruu ua- uaa uab uad uae uam uar uau uba ubb ube ubr ubu uda udb udd ude udm udr udu uea ueb ued uee uem uer um- uma umb umd ume umm umr umu ur- ura urb urd ure urm urr uru uua uue uum uur uuu

a-be aaaa aaab aaad aaae aaam aaar aaba aabb aabd aabm aada aade aadu aaea aaem aama aamb aamd aame aamr aara aard aare aarm aaru abaa abab abad abae abam abar abau abb- abba abbb abbe abbr abda abdu abed abee aber abma abmb abra abua abud abue abum adaa adab adad adae adam adar adba adda addd adde addr addu adea adeb adee adem ader adma admb adme admr adra adre adua adub adue adur aede aeer aer- aera aerd amaa amad amae amam amar amb- amba ambe ambr ambu amda amed amee amer ameu amm- amma amme ammu amra amua amud amum amur arab arad arae aram arar arau arba arbe arda arde ardm ardu area ared aree arem areu arma armd arme armm armu arr- arra arre arrr arru arua arub arud arue arum auaa aube aude auer auma aur- aura aurd aure baaa baad baam baar baba babb babe babm babr babu bada badb badd bade badr badu baed baer bama bamb bame bamm bamu bar- bara barb bard bare barm barr baru bau- baud baum baur bbad bbau bbbb bbdd bbeb bd-r bdrm bead beam bear beau beba bebb bebe beda bede bedu beeb beed beem beer bema beme bemu bera berd bere berm berr beru beur bmaa bmdb brab brad brae bram brau brda brdm brea breb bred bree brem brer brrm brrr brud brue brum buad buar buba bubb bube bubu buda budb budd bude budu buea buem buer bueu bum- buma bumb bur- bura burb burd bure burm burr buru daab daad daae daam daar daau daba dabb dabu dada dade dadu daeb daem daer daeu dama damb dame damm damu dara darb dard dare darr daru daub daud daue daum daur dbar dddd ddre ddub dead deae dear deau deba debe debu deda dedd dede dedu deeb deed deem deer dem- dema demb demd deme demu der- dera derb dere derm derr deua deue deum deur dmaa dmab dmae dmba dmea dmrb draa drab drad dram drar drau drba drda drea dred dree drem drra drua drub drue drum druu duaa duab duad duar dub- duba dubb dube dubu duda dudd dude dudu duer duma dumb dume dumm dura dure duru duur eaba eada eadb eadd eama eame eara earb eard eare ebam ebba ebbr ebed eber ebru ebur edad edam edar edda edde eddm ede- edea edem eder edma edme edra edrm edru edur eede eedu eeea eeee eera emad emae emam emar emba embd embe embr emer emeu emma emme emmu emra emre erad eram erau erba erbb erbe erda erde ereb ered erem erer erma erme erra erre erua erub erum erur euba eude eudm euer eur- eura eure maaa maad maam maar maba mabe mabu mada madb madd made maee maem maer mama mame mamu mar- mara mard mare marm marr maru maua maud maum maur mbam mbba mbda mbdb mbed mddm mdea mdma mdme mdra mdud mead mear mebe meda medb medd mede medu meed meem meer mema meme memr memu mer- mera merb merd mere merm meru meum mmaa mmab mmar mmda mmdb mmea mmmd mmmm mrad mrbb mrbm mrda mrdd mreb mred mree mrmd mrud muar mube muda mudd mude mudu mued muee muma mume mumm mumu mura murd mure murr muru raab raad raam raba rabb rabe rabu rada radd rade radm radr radu raed raer rama ramb rame ramm ramu rara rarb rare raua raub raud raue raum rbbb rbbr rdbm rder rdma rea- read reae ream rear reau reba rebb rebe rebu reda redd rede redr redu reeb reed reem rema reme rera rerd rere reru reue reuu rrad rred rrrr rrum ruad ruba rubb rube rubu ruda rudd rude rued ruer ruma rumb rume rumm rura rurd rure ruru ruud uaru uaua ubar ubba ubbe uber ubra ubud udaa udad udar udau udea udem uder udma udra ueba ueda