mrtt mtbc mtcr mtel mtlb mtle mtrc mtre mtrl mtrr mttr mtuc mube muc- mucc muce mucu muee muel muet mule mull mulm mult mulu mume mumm mumu murc mure murl murr murt muru mute mutt mutu muut rbbb rbbr rbcl rble rcbc rccb rccc rcet rcle rctc rebb rebe rebu recc rece recm recr rect recu reeb reel reem reet relb rele rell relm relt reme rere rert reru rete retr rett reue reul reut reuu rlee rleu rlml rmll rmtu rrle rrmc rrrr rrum rtcc rtce rtcm rtee rtle rtlt rtmc rtml rubb rube rubu ruce ruct ruel ruer ruet rule rull rumb rume ruml rumm rumt rurc rure ruru rute rutl rutt rutu tbcb tbcc tbce tbrb tccc tccu tctc tcul tebu tecl tecr tect teec teel teem teer teet tel- telc tele tell telt telu teme temu ter- terc tere term terr teru tete tetr tett tetu teut tmbc tmbr tmcc tmcm tmtt trcc trcl tre- trec tree trem tret treu trmb trml trmu trtc trte trtr trub truc true trut truu ttbb tter ttml tttt ttul tubb tube tubr tubu tucc tuel tuer tuet tule tull tulu tumb tume tumu turb turc ture turm turr turt turu tute tutl tutt tutu tuum ubbe uber ubet uble ucbc ucel ucmc ucrc ucut uele uell ulbc ulcc uleb ulee ulle ullr ulme ulmu ultt ulul ulum umb- umbe umec umer umet umut urbe ure- uret urle urre urte urum urur urut utec utel uter utmb uttu uulu uuuu

-tree bbbee bcell be-er bebel beber becel becue becum becut beebe beele beete beeut belce belec belee belem belet bellb belle belue belum belur belut bembe bemer bemet berbe bercu berec berel beret berle berme berre berru berte berum betee betel beter betle betre bett- bette betul beuer beule beure beute bleer bleet blere blete bleue bluer bluet blume blurb blure blurr blurt brebu brece breel breem breer breet brell breme bremm brere brett breu- brmmm brrrr bruce bruer bruet brule brull brume brumm brute btc-e btr-t bubbe buber buble bucet bucum bucur buell bulb- bull- bulle bulul bulut bumbu bumme burcu burel buret burle burru burte burtt buruc burut butec buter butle butme butte butut c-met c-tec cblue ccccc ccell ccett cclcm ccrcl ccrel cctrl cebec ceber cecum ceele ceere celeb celer cell- celle celte cemec cemre cerbu cerc- cerce cerec cerer ceret cerre certe cetme cette cleer cleet cleme clerc clere clete clett clubb clue- cluer clumb clurr clute clutt cmere crebe crece creel creem creer crele crell creme crete cretu creu- creue creul crrel cruce cruel cruet crule crull crumb crume crure ctcum ctree ctrlc cttee ctulu cubbe cubeb cubel cuber cubub culbe culet culle cullu culur cumbe cumbu cumec cumel cumm- curce curel curer curet curle curll curlu curre cutcu cutee cuter cutle cuuel ebber ebbet ebble ebell eberl ebert eblul ebull ebure eccle ecume eeeee eeler eembc eemct elect eleet elele eleme eleut ellel eller ellet ellul elmer elmet elrec elulu eluru elute embee embel ember emble embue emcee emeer emele emell emere emerl emert emmer emmet emtec emtee emtel emule emure erbbe erber erect erem- erere errtu erte ertel erter eruct etete etree ettel etter ettle eturu eucre euell euler eum-u eumel eurel eurre lebce lebec lebel leber lebet lecce leece leell leeme leere leert leleu lelle lemel lemer lemme lemur lerer lerum letbe letem letme letre lette letur leuc- leuce lmule lubbe luber luble lubur lucee lucet lucre lucur lulec lulle lulte luluc lulul lumb- lumbe lumer lumet lumle lumme lumut lurer lurue lute- luter lutte lutum m-tel mbcet mbebe mbere mbret mbube mbule mbulu mburu mcbee mccue mcree mcube mebbe meble mecel mecul mecum meece meele meell meemu meere meete melbu melee melem melet mell- melle melte melub melur melut membe memel memer merce merel merer meret merle merre merte merul merur metel meter metle metr- metre mette metur meuer meule meure meute mlete mmccc mmccl mmmcc mmmmm mrcub mreru mrlee mrmet mt-lb mt-tc mt-te mt-tm mt-tr mt-tt mtree mttle mtume muble mucel muctc mucum mucur mulce mulct muler mulet mulle mult- multe mulur mumbe mumcu mumle mumlu mumme mummu muret mureu murle murre murru murum murut muter mutet mutlu mutum rebbe rebec rebel reber rebet rebut recce recet rect- recte recue recur recut reece reeme reere relee relet relte relue remee remel remer remet remue rere- reree reret rerum retee retel retem reter rette reuel reuer reuet reule reume reute rmutt rubee rubel ruber ruble rucer rucul ruele ruell ruere ruete ruler rumbe rumer rummu rurec ruter rutle rutte rutul ruule ruutu tbtbt tbutt tcell teber tebet tectb tecul tecum teele teell teeme teemu telce tele- telec telem teler teleu tell- telle tembe tembu temel terce terem teret tereu terme terre tert- tetel teter tetle tetr- tette tlell tlett tllbr tlmer treer treet trele treme trere trete trett treut trubu truce truel truer trule trull trume trute ttttt tuber tubul tucet tuctu tucum tuell tuelt tulce tulem tulet tulle tulum tumbe tumbu tumul tumut turbe turbt turel turem turet turle turre turtu turul turut tutee tutel tutle tutte tuuru u-cee ubble uber- ubume uccel uccle ucell uclue ulcer ullet ullur ulmer ulmet ulrum ultre ululu uluru umbe- umbel umber umble umblu umbre umeer umeme umlet urcel urelu ureme urtel urter urtlu urubu uruce urucu urutu uter- utmer utrum utter uttur utube uturu uuuuu

-elect b-reel b-tree bbbbbb beblur becure becurl beebee beebem beeler beembe beemer beerme beeter beetle belber belett beller bellet belleu bellue bellum beltel belter beltre belull belute bemeet bemete bemmel bemute berbee berber bercel bereel bereet berere bermel bermet berrer berret bertel bertem bertre berube beteem betell betelu betere betete betrue bettee bettel better bettle betutu beumer beurre bleere blublu bluett blumer blurre bluter brebel breere bremer bretcu brette breuer brubru bruel brulee brumel brumle bruree brutel brutum bubber bubble bubele bububu bueler buellt bulbel bulbul bull-e bullee buller bullet bulmer bultel bulter bumbee bumble bummel bummer bummle burbet burble burbur burcer burell burler burlet burree burrel