-er b-u bbb bbc bbe bbn bbr bbt bbu bcb bcc bce bcn bcr bct bcu be- beb bec bee ben ber bet beu bnb bnc bne bnn bnr bnt bnu brb bre brn brr brt bru btb btc bte btn btr btt btu bub buc bue bun bur but buu c-- cbb cbc cbe cbn cbr cbt cbu ccb ccc cce ccn ccr cct ccu ce- ceb cec cee cen cer cet ceu cn- cnb cnc cne cnn cnr cnt cnu crb crc cre crn crr crt cru ctb ctc cte ctn ctr ctt ctu cub cuc cue cun cur cut cuu ebb ebc ebe ebn ebr ebt ebu ec- ecb ecc ece ecn ecr ect ecu eeb eec eee een eer eet en- enb enc ene enn enr ent enu erb erc ere ern err ert eru etb etc ete etn etr ett etu eu- eub euc eue eun eur eut nbb nbc nbe nbn nbr nbt nbu ncb ncc nce ncn ncr nct ncu ne- neb nec nee nen ner net neu nnb nnc nne nnn nnt nnu nrb nrc nre nrn nrr nrt nru ntb ntc nte ntn ntr ntt ntu nub nuc nue nun nur nut nuu rbb rbc rbe rbn rbr rbt rbu rcb rcc rce rcn rcr rct rcu re- reb rec ree ren rer ret reu rnb rnc rnn rnr rnt rnu rrb rrc rrn rrr rrt rru rtb rtc rte rtn rtr rtt rtu rub ruc rue run rur rut ruu tbb tbc tbe tbn tbr tbt tbu tcb tcc tce tcn tcr tct tcu te- teb tec tee ten ter tet teu tnb tnc tne tnn tnr tnt trb trc tre trn trr trt tru ttb ttc tte ttn ttr ttt ttu tub tuc tue tun tur tut tuu ubb ubc ube ubn ubr ubt ubu ucb ucc uce ucn ucr uct ucu ueb uec uee uen uer uet un- unb unc une unn unr unt unu ur- urb urc ure urn urr urt uru utb utc ute utn utr utt utu uuc uue uun uur uut uuu

-ene bbbb bbeb bbet bbrc bcbc bccc bcec bcer bcet bcnu bcru bctc bcuc bebb bebe becu beeb been beer beet bene benn bent benu berc bere bern berr bert beru betc bete bett betu beur bner bnet bnrr brcb brce breb brec bree bren brer bret brrr brtc bruc brue brun brut btcc btec bten btrc btrt bttb bubb bube bubu bucc buce bucu buen buer bueu bunb bune bunn bunt bunu bur- burb bure burn burr burt buru but- bute butt cbbc cbcc cbce cbcn cbcr cbct cbcu cbec cbee cber cbet cbre cbrn cbrt cbtc ccbc ccbn cccb cccc cccu ccee ccnb ccnc ccne ccnr ccnu ccrc ccre ccrt cctb cctc cctt ccuc ccut cebu cec- cece cect ceeb ceec cen- cene cent cer- cerc cere cern cert cet- cete cnbc cnet cnrc cnrr cnrt cntc cntr cnut crbc crbu crcc crce crcr cre- creb crec cree cren cret creu crne crrt crtc crub crue crun crut ctec cten ctne ctrc ctrn cttn cub- cubb cube cucc cuce cucn cuer cune cunt curb cure curn curr curt cut- cutc cute cutt ebbc ebbr ebcc eben eber ebru ebur ecbc ecbe eccb eccc ecce ecct ecne ecrc ecrr ecru ect- ectc eeee eent eerc eetc eete eetu enb- enbn enbr ence enee ener ennc enne ennu ent- ente entr enue enur enut erbb erbe ercc erce ereb erec eren erer eret erne errc erre ertu erub eruc erur etbc etbr etcc etec etee eten eter etne etnr etre ette ettn ettu etun eubc euer eur- eurc eure eurt nbbc nbcc nber ncbc nccc nccn nccr ncct nccu ncec ncee ncen ncer ncnc ncrc ncre nctc ncte nctr ncue nebb nebe nebn nebr nebu necc nece necr nect neeb neen neer neet nene nent nenu nerc nere nerr nert neru net- netb nete nett neuc neue neun neur neut neuu nnnn nntn nren nrrc ntbc ntcc nter nteu ntnu ntrc ntru nttr ntuc nubc nube nuce nucu nuee nuer nunc nune nunn nunt nurc nure nurn nurr nurt nuru nute nutt nutu rbbb rbbr rcbc rccb rccc rcet rcnr rctc rebb rebe rebu recc rece recr rect recu reeb reen reet rene renn rent renu rere rert reru rete retr rett reue reut reuu rnbr rnnt rnut rrrr rrun rtcc rtce rtee rubb rube rubu ruce ruct ruen ruer ruet runc rune runn runt rurc rure ruru rute rutt rutu ruun tbcb tbcc tbce tbrb tccc tccu tcnn tctc tebu tecr tect teec teen teer teet tenb tenc tene tenn tent tenu ter- terc tere tern terr teru tete tetr tett tetu teut tnbc tncc tneb tnut trcc tre- trec tree tren tret treu trtc trte trtr trub truc true trun trut truu ttbb ttcn tten tter tttt tubb tube tubr tubu tucc tuen tuer tuet tunb tunc tune tunn tunu turb turc ture turn turr turt turu tute tutt tutu ubbe uber ubet ucbc ucrc ucut unbe uncc unce unct uneb unec unee unen uner unne untb unte unut urbe ure- uret urne urre urte urun urur urut utec uter utne uttu uuen uuuu

-tree bbbee be-er beber becue becut beebe beene beete beeut bence bene- benet benne bennu benue benun benur benut berbe bercu berec beren beret berne bernt berre berru berte berun betee beten beter betne betre bett- bette beuer beure beute brebu brece breen breer breet brene brenn brent brere brett breu- brrrr bruce bruen bruer bruet brune brunn brunt brute bruun btc-e btr-t bubbe buben buber bucet bucur bunce bunne bunte bunun bunut burcu buren buret burn- burne burnt burru burte burtt buruc burun burut butec buten buter butte butut c-tec ccccc ccett ccnet cebec ceber cecun ceene ceere cence ceneu cent- centr cerbu cerc- cerce cerec ceren cerer ceret cerne cerre certe ceten cette cetun cneru cnnnn cntrc crebe crece creen creer cren- crete cretu creu- creue crnce crnec crner cruce cruet crune crunt crure