-er b-u bbb bbe bbl bbn bbr bbt bbu be- beb bee bel ben ber bet beu blb ble bll bln blr blt blu bnb bne bnl bnn bnr bnt bnu brb bre brl brn brr brt bru btb bte btl btn btr btt btu bub bue bul bun bur but buu ebb ebe ebl ebn ebr ebt ebu eeb eee eel een eer eet elb ele ell eln elr elt elu en- enb ene enl enn enr ent enu erb ere erl ern err ert eru etb ete etl etn etr ett etu eu- eub eue eul eun eur eut lbb lbe lbl lbr lbt lbu leb lee lel len ler let leu llb lle lll lln llr llt llu lnb lne lnl lnn lnr lnt lnu lrb lrn lrr lrt lru ltb lte ltl ltr ltt ltu lub lue lul lun lur lut luu nbb nbe nbl nbn nbr nbt nbu ne- neb nee nel nen ner net neu nlb nle nll nln nlr nlt nlu nnb nne nnl nnn nnt nnu nrb nre nrl nrn nrr nrt nru ntb nte ntn ntr ntt ntu nub nue nul nun nur nut nuu rbb rbe rbl rbn rbr rbt rbu re- reb ree rel ren rer ret reu rle rll rln rlr rlt rlu rnb rnn rnr rnt rnu rrb rrl rrn rrr rrt rru rtb rte rtl rtn rtr rtt rtu rub rue run rur rut ruu tbb tbe tbl tbn tbr tbt tbu te- teb tee tel ten ter tet teu tle tll tln tlr tlt tlu tnb tne tnl tnn tnr tnt trb tre trl trn trr trt tru ttb tte ttl ttn ttr ttt ttu tub tue tul tun tur tut tuu ubb ube ubl ubn ubr ubt ubu ueb uee uel uen uer uet ulb ule ull uln ulr ult ulu un- unb une unl unn unr unt unu ur- urb ure url urn urr urt uru utb ute utl utn utr utt utu uue uun uur uut uuu

-ene bbbb bbeb bbet bblb bebb bebe beeb beel been beer beet bele bell belt belu bene benn bent benu bere bern berr bert beru bete bett betu beur blbt bleb blee blet bleu blub blue blur blut bner bnet bnrr breb bree brel bren brer bret brrr brue brun brut bten btrt bttb bubb bube bubu buel buen buer bueu bulb bule bull bult bulu bunb bune bunn bunt bunu bur- burb bure burl burn burr burt buru but- bute butt ebbr ebel eben eber ebru ebul ebur eeee eele eent eete eetu el-b elbe elbu elee elen eler elet elle ellu elne elte elue elul enb- enbn enbr enee enel ener enne ennu ent- ente entr enue enur enut erbb erbe ereb erel eren erer eret erle erll erne erre ertl ertu erub erur etbr etee etel eten eter etne etnr etre ette ettn ettu etun euer eule eur- eure eurt lblr lbrt le-u lebu leel leen leer leet lele lell lelu lene lenn lent lere lern lert lete lett leun leur llet lleu llll lner lrne lrrr ltbl ltee ltnt lttr lube luer lule lull lulu lune lunn lunt lure lurt lute nber nebb nebe nebn nebr nebu neeb neel neen neer neet nele nell nelt nene nent nenu nere nerl nerr nert neru net- netb nete nett neue neun neur neut neuu nler nlrb nnnn nntn nren nrlb nrrl nrtl nter nteu ntnu ntrl ntru nttr nube nubl nuee nuel nuer nule null nune nunn nunt nure nurl nurn nurr nurt nuru nute nutt nutu rbbb rbbr rble rebb rebe rebu reeb reel reen reet relb rele rell relt rene renn rent renu rere rert reru rete retr rett reue reul reut reuu rlee rleu rnbr rnnt rnut rrle rrrr rrun rtee rtle rtlt rubb rube rubu ruel ruen ruer ruet rule rull rune runn runt rure ruru rute rutl rutt rutu ruun tbrb tebu teel teen teer teet tel- tele tell teln telt telu tenb tene tenn tent tenu ter- tere tern terr teru tete tetr tett tetu teut tlen tneb tnut tre- tree tren tret treu trte trtr trub true trun trut truu ttbb tten tter tttt ttul tubb tube tubr tubu tuel tuen tuer tuet tule tull tulu tunb tune tunn tunu turb ture turn turr turt turu tute tutl tutt tutu ubbe uber ubet uble uele uell uleb ulee ulen ulle ullr ulne ultt ulul unbe uneb unee unen uner unle unne untb unte unut urbe ure- uret urle urne urre urte urun urur urut utel uter utne uttu uuen uulu uuuu

-tree bbbee be-er bebel beber beebe beele beene beete beeut belee belen belet bellb belle belue belur belut bene- benet benne bennu benue benun benur benut berbe berel beren beret berle berne bernt berre berru berte berun betee betel beten beter betle betne betre bett- bette betul beuer beule beure beute bleen bleer bleet blent blere blete bleue bluer bluet blunt blurb blure blurr blurt brebu breel breen breer breet brell brene brenn brent brere brett breu- brrrr bruen bruer bruet brule brull brune brunn brunt brute bruun btr-t bubbe buben buber buble buell bulb- bulen bull- bulle bulul bulun bulut bunne bunte bunun bunut burel buren buret burle burn- burne burnt burru burte burtt burun burut buten buter butle butte butut e-ten ebber ebbet ebble ebell ebene eberl ebern ebert eblul ebner ebull ebure eeeee eeler eener eenet eeten elben eleet elele elene eleut ellel ellen eller ellet ellul elren elten elulu eluru elute enbun enent enete enlen ennet enrut entel enten enter entre enure enurn erbbe erben erber ereen erere erlen ernen ernet ernle errtu erte ertel erter ertun etern etete etnre etree etrun ettel etten etter ettle eturu euell eulen euler eunet eurel eurre lebel leben leber lebet leell leere leert leleu lelle lenne lente leren lerer lerne letbe leten letre lette letur lubbe luber luble lubne lubun lubur lueen luen lulle lulte lulul lunel lunet lunne luren lurer lurne lurue lurun