-er b-u bbb bbc bbd bbe bbn bbr bbu bcb bcc bcd bce bcn bcr bcu bdb bdc bdd bde bdr bdu be- beb bec bed bee ben ber beu bnb bnc bnd bne bnn bnr bnu brb brd bre brn brr bru bub buc bud bue bun bur buu c-- cbb cbc cbd cbe cbn cbr cbu ccb ccc ccd cce ccn ccr ccu cdb cdc cdd cde cdn cdr cdu ce- ceb cec ced cee cen cer ceu cn- cnb cnc cnd cne cnn cnr cnu crb crc crd cre crn crr cru cub cuc cud cue cun cur cuu dbb dbc dbd dbe dbn dbr dbu dcb dcc dcd dce dcn dcr dcu ddb ddc ddd dde ddn ddr ddu de- deb dec ded dee den der deu dnb dnc dnd dne dnn dnr drb drc drd dre drn drr dru dub duc dud due dun dur ebb ebc ebd ebe ebn ebr ebu ec- ecb ecc ecd ece ecn ecr ecu ed- edb edc edd ede edn edr edu eeb eec eed eee een eer en- enb enc end ene enn enr enu erb erc erd ere ern err eru eu- eub euc eud eue eun eur nbb nbc nbd nbe nbn nbr nbu ncb ncc ncd nce ncn ncr ncu ndb ndc ndd nde ndn ndr ndu ne- neb nec ned nee nen ner neu nnb nnc nne nnn nnu nrb nrc nrd nre nrn nrr nru nub nuc nud nue nun nur nuu rbb rbc rbd rbe rbn rbr rbu rcb rcc rcd rce rcn rcr rcu rdb rdc rdd rde rdn rdr rdu re- reb rec red ree ren rer reu rnb rnc rnd rnn rnr rnu rrb rrc rrd rrn rrr rru rub ruc rud rue run rur ruu ubb ubc ube ubn ubr ubu ucb ucc ucd uce ucn ucr ucu udb udc udd ude udn udr udu ueb uec ued uee uen uer un- unb unc und une unn unr unu ur- urb urc urd ure urn urr uru uuc uue uun uur uuu

-ene bbbb bbdd bbeb bbrc bcbc bccc bcde bcec bcer bcnu bcru bcuc bd-r bdbc bddc bebb bebe becu bede bedu beeb beed been beer bend bene benn benu berc berd bere bern berr beru beur bner bnrr brcb brce breb brec bred bree bren brer brrr bruc brud brue brun bubb bube bubu bucc buce bucu budb budd bude budu buen buer bueu bunb bund bune bunn bunu bur- burb burd bure burn burr buru c-cd cbbc cbcc cbce cbcn cbcr cbcu cbdb cbdc cbdn cbec cbee cber cbnd cbrd cbre cbrn ccbc ccbn cccb cccc cccu ccdc ccdn ccdr cced ccee ccnb ccnc ccne ccnr ccnu ccrc ccre ccuc cd-e cd-r cddb cddr cdec cder cdnb cdnc cdre cebu cec- cece cedd cede cedu ceeb ceec cen- cend cene cer- cerc cerd cere cern cnbc cndd cnrc cnrr crbc crbu crcc crce crcr crdc cre- creb crec cred cree cren creu crne crub crud crue crun cub- cubb cube cucc cuce cucn cude cued cuer cund cune curb curd cure curn curr dbcc dbrn dcbc dccb dccc dccu dcdb dddd ddrc ddre ddub debe debu dec- decc decd dece dedd dede dedu deeb deed deen deer dene denn denu der- derb derc dere dern derr deue deur dnce dner dnrc drbc dred dree dren drub drue druu dub- dubb dubc dube dubu duce dudd dude dudu duer dunc dune dunn dure durn duru duur ebbc ebbr ebcc ebed eben eber ebru ebur ecbc ecbe eccb eccc ecce ecdc eced ecne ecrc ecrr ecru eddc edde ede- eden eder edrn edru educ edun edur eede eedu eeee eend eerc enb- enbn enbr ence end- ende endu ened enee ener ennc enne ennu enue enur erbb erbe ercc erce erde ereb erec ered eren erer erne errc erre erub eruc erur eubc eucd eude euer eur- eurc eure nbbc nbcc nber ncbc nccc nccn nccr nccu ncdc ncdn ncdr ncdu ncec nced ncee ncen ncer ncnc ncnd ncrc ncre ncue ndcc nddb ndde nder ndrc ndre nebb nebe nebn nebr nebu necc nece necr nedc nedd nede nedu neeb need neen neer nend nene nenu nerc nerd nere nerr neru neuc neue neun neur neuu nndb nnnn nrdc nren nrrc nrrd nubc nube nuce nucu nudc nudd nude nuee nuer nunc nune nunn nurc nurd nure nurn nurr nuru rbbb rbbr rcbc rccb rccc rcdc rcde rcnr rcrd rder rebb rebe rebu recc recd rece recr recu redc redd rede redr redu reeb reed reen rend rene renn renu rerd rere reru reue reuu rnbr rndc rred rrrr rrun rubb rube rubu ruce rudd rude rued ruen ruer runc rund rune runn rurc rurd rure ruru ruud ruun ubbe uber ubud ucbc ucdc ucdd ucrc udbc uden uder udun uend unbd unbe uncc unce unde uneb unec uned unee unen uner unne urbe urde urdu ure- ured urne urre urun urur uuen uuuu

b-e-d bbbee bcced bd-re be-er bebed beber becue bedde bedee beden beder bedub bedue beebe beede beene beerd bence bende bene- benne bennu benue benun benur berbe bercu berde berdu berec bered beren bernd berne berre berru berun beuer beure brebu brece bredd brede breed breen breer brend brene brenn brerd brere breu- brrrr bruce brud- brude brued bruen bruer brune brunn bruun bubbe buben buber bucur budde buddu budec budur bunce bunde bundu bunne bunud bunun burcu burde buren burn- burne burru buruc burud burun ccccc cduce cebec ceber cecun ceded ceder cedr- cedre ceede ceene ceere cence ceneu cerbu cerc- cerce cerec cered ceren cerer cerne cerre cneru cnnnn crebe crece crede creed creen creer cren- creu- creue crnce crnec crner cruce crude crune crure cubbe cubeb cubed cuber cubub cudde cunde cunne curce cured curer curre d-cru ddddd debce debed deben deber debne debrc decur dedde dedee deden deder dedun dedur deece deede deene deere dende deneb denee dener denne derbe derce derde dered deren derne derre derub derue deuce