-er b-u bbb bbd bbe bbm bbr bbt bbu bdb bdd bde bdm bdr bdt bdu be- beb bed bee bem ber bet beu bmb bmd bme bmm bmr bmt bmu brb brd bre brm brr brt bru btb btd bte btm btr btt btu bub bud bue bum bur but buu dbb dbd dbe dbm dbr dbt dbu ddb ddd dde ddm ddr ddt ddu de- deb ded dee dem der det deu dmb dmd dme dmm dmr dmt dmu drb drd dre drm drr drt dru dtb dtd dte dtm dtr dtt dtu dub dud due dum dur dut ebb ebd ebe ebm ebr ebt ebu ed- edb edd ede edm edr edt edu eeb eed eee eem eer eet em- emb emd eme emm emr emt emu erb erd ere erm err ert eru etb etd ete etm etr ett etu eu- eub eud eue eur eut m-r mbb mbd mbe mbm mbr mbt mbu mdb mdd mde mdm mdr mdt mdu meb med mee mem mer met meu mmb mmd mme mmm mmr mmt mmu mrb mrd mre mrm mrr mrt mru mtb mtd mte mtm mtr mtt mtu mub mud mue mum mur mut muu rbb rbd rbe rbm rbr rbt rbu rdb rdd rde rdm rdr rdt rdu re- reb red ree rem rer ret reu rmb rmd rme rmm rmr rmt rrb rrd rrm rrr rrt rru rtb rtd rte rtm rtr rtt rtu rub rud rue rum rur rut ruu tbb tbd tbe tbm tbr tbt tbu tdb tdd tde tdm tdr tdt tdu te- teb ted tee tem ter tet teu tmb tmd tme tmm tmr tmt tmu trb trd tre trm trr trt tru ttb ttd tte ttm ttr ttt ttu tub tud tue tum tur tut tuu ubb ube ubr ubt ubu udb udd ude udm udr udt udu ueb ued uee uem uer uet um- umb umd ume umm umr umt umu ur- urb urd ure urm urr urt uru utb utd ute utm utr utt utu uue uum uur uut uuu

bbbb bbdd bbeb bbet bd-r bdrm bebb bebe bede bedu beeb beed beem beer beet beme bemu berd bere berm berr bert beru bete bett betu beur bmdb brdm brdt breb bred bree brem brer bret brrm brrr brud brue brum brut btdt btrt bttb bubb bube bubu budb budd bude budu buem buer bueu bum- bumb bur- burb burd bure burm burr burt buru but- bute butt dbtt dddd ddre ddub debe debt debu dedd dede dedu deeb deed deem deer deet dem- demb demd deme demu der- derb dere derm derr dete detr deue deum deur deut dmdt dmrb dred dree drem dret drub drue drum drut druu dted dub- dubb dube dubu dudd dude dudu duer duet dumb dume dumm dure durt duru dute duur duut ebbr ebed eber ebru ebur edde eddm ede- edem eder edme edrm edru edur eede eedu eeee eete eetu embd embe embr emdt emer emet emeu emme emmu emre emte erbb erbe erde ereb ered erem erer eret erme erre ertu erub erum erur etbr etee etem eter etre etrm ette ettu eude eudm euer eur- eure eurt mbdb mbed mddm mdme mdud mebe medb medd mede medu meed meem meer meet meme memr memu mer- merb merd mere merm mert meru met- mete mett metu meum mmdb mmmd mmmm mrbb mrbm mrdd mreb mred mree mrmd mrtm mrtt mrud mtbd mtre mtrr mttr mube mudd mude mudu mued muee muet mume mumm mumu murd mure murr murt muru mute mutt mutu muut rbbb rbbr rdbm rder rebb rebe rebu redd rede redr redu reeb reed reem reet reme rerd rere rert reru retd rete retr rett reue reut reuu rmtu rred rrrr rrum rtdt rtee rubb rube rubu rudd rude rued ruer ruet rumb rume rumm rumt rurd rure ruru rute rutt rutu ruud tbrb tddb tebu tedd tede tedm teed teem teer teet teme temu ter- tere term terr teru tete tetr tett tetu teut tmbr tmed tmtt tre- tred tree trem tret treu trmb trmd trmu trte trtr trub trud true trut truu ttbb tter tttt tubb tube tubr tubu tude tudu tuer tuet tumb tume tumu turb turd ture turm turr turt turu tute tutt tutu tuum ubbe uber ubet ubud udem uder udet umb- umbe umde umer umet umut urbe urde urdu ure- ured uret urre urte urum urur urut uter utmb uttu uuuu

-tree b-e-d bbbee bd-re be-er bebed beber bedde bedee beder bedet bedub bedue bedum beebe beede beerd beete beeut bembe bemer bemet bemud berbe berde berdu bered beret berme berre berru berte berum betee beter betre bett- bette beuer beure beute brebu bredd brede bredt breed breem breer breet breme bremm brerd brere brett breu- brmmm brrrr brud- brude brued bruer bruet brume brumm brute btr-d btr-t bubbe buber budde buddu budur bumbu bumed bumme burde buret burru burte burtt burud burut buter butme butte butut d-mer dbume ddddd ddrmm ddrum debed deber debet debte debut dedde dedee deder dedur dedut deede deeme deere dembe demer demet demme demre demur derbe derde dered derm- derme derre derub derue derum deter detre dette detur deure deut- drdre dredd drede dreed drere drude drumb drumm dubee duded duder duere duerr duete duett dumme dumre durbe dured duree durer duret durre durte durtu durum dutte e-dee e-med ebbed ebber ebbet ebert ebmud ebure edder eddre edere edmed edred edrum eeeee eerde embed embee ember embud embue emede emeer emere emert emmer emmet emtee emure erbbe erber erdem erdre erdut erede erem- erere erred errtu erte erter etete etree etter etude eturu eum-u eurre mbebe mbere mbret mbube mburu mebbe medee medem meder medeu medue meede meemu meere meete membe memer merde mered merer meret merre merte merur meted meter metr- metre mette metur meudt meuer meure meute mmmmm mreru mrmet mrred mt-td mt-te mt-tm mt-tr mt-tt mtree mtume mudde muddu mumbe mumme mummu murde murdu mured muret mureu murre murru murud