-ene bbbb bbdd bbeb bbpr bbrc bcbc bcbp bccc bcde bcec bcer bcnu bcpp bcru bcuc bcup bd-r bdbc bddc bdpc bebb bebe becu bede bedu beeb beed been beep beer bend bene benn benu berc berd bere bern berr beru beur beux bner bnpp bnrr bpcp bprc bprd brcb brce breb brec bred bree bren brep brer brex brrr bruc brud brue brun brup brux bubb bube bubu bucc buce bucu budb budd bude budu buen buer bueu bunb bund bune bunn bunu bupc bur- burb burd bure burn burp burr buru c-cd cbbc cbcc cbce cbcn cbcp cbcr cbcu cbdb cbdc cbdn cbec cbee cber cbnd cbpc cbpp cbrd cbre cbrn cbux ccbc ccbn cccb cccc cccp cccu ccdc ccdn ccdp ccdr cced ccee ccnb ccnc ccne ccnp ccnr ccnu ccpe ccpn ccpp ccpr ccrc ccre ccrp ccuc ccup cd-e cd-r cddb cddr cdec cder cdex cdnb cdnc cdre cebp cebu cec- cece cecp cedd cede cedu ceeb ceec cen- cend cene cepc cepe cepp cepr cer- cerc cerd cere cern cerp ceux cexe cnbc cnbp cncp cndd cndp cnep cnex cnrc cnrr cpbc cpce cpcu cpeb cpep cper cpnb cppd cpre crbc crbu crcc crce crcr crdc cre- creb crec cred cree cren crep creu crex crne crpc crub crud crue crun crup crux cub- cubb cube cucc cuce cucn cude cued cuer cund cune cunp cupe cupp cupr curb curd cure curn curr cxxx dbcc dbcp dbpc dbpd dbrn dcbc dccb dccc dccp dccu dcdb dcup dcxx dddd ddrc ddre ddub debe debu dec- decc decd dece dedd dede dedu deeb deed deen deep deer dene denn denu depc depe depp depr der- derb derc dere dern derp derr deue deur deux dex- dexe dnce dner dnrc dpbc dpcp dper dppc dppx drbc dred dree dren drub drue drup druu dub- dubb dubc dube dubu duce dudd dude dudu duer dunc dune dunn dupe dure durn duru duur dxbc dxbe dxbn dxbr dxcb dxcc dxdc dxdr dxec dxed dxep dxnd dxnu dxrd dxre dxrp dxrr dxrx dxue dxur dxxr dxxx ebbc ebbr ebcc ebed eben eber ebru ebur ecbc ecbe eccb eccc ecce ecdc eced ecne ecpd ecpp ecrc ecrr ecru eddc edde eddp ede- eden eder edex edrn edru educ edun edup edur eede eedu eeee eend eerc enb- enbn enbr ence end- ende endu ened enee ener ennc enne ennu enp- enue enur epcc epec epee epen eper eppc eppp eprb eprp epub epxp er-x erbb erbe ercc erce ercp erde ereb erec ered eren erer erne erpe errc erre erub eruc erur eubc eucd eude euer eur- eurc eure exec exed exen exer expn expr exrx n-up nbbc nbcc nber nbpp ncbc nccc nccn nccp nccr nccu ncdc ncdn ncdr ncdu ncec nced ncee ncen ncep ncer ncnc ncnd ncpc ncrc ncre ncrp ncue ndcc ndcp nddb ndde nder ndnp ndpd ndpr ndrc ndre nebb nebe nebn nebr nebu necc nece necr nedc nedd nede nedu neeb need neen neep neer nend nene nenu nepc nepe nepr nerc nerd nere nerr neru neuc neue neun neur neuu nexe nexx nndb nnnn nnpr npcc nppc nppd nrdc nren nrpc nrpn nrrc nrrd nubc nube nuce nucu nudc nudd nude nuee nuer nunc nune nunn nupe nurc nurd nure nurn nurp nurr nuru nxdn pbcc pbed pcbc pccc pcce pcep pcer pcnx pcpb pcpn pcpp pcrc pcrd pcre pcun pdcp pdpn pdpr pdrc pece pecr ped- pede peec peed peen peep peer pen- penc pend pene penn penu pepd pepe per- perc perd pere pern perp perr peru peun peur pnec pneu pnpp pnup ppcc ppcd ppen pper pppd pppn pppp pprc ppru ppur prbc prcc prcd prcp pre- preb prec pred pree pren prep preu prex prnd prnp prpd prrd prud prue pruu pu-e pube pubu puce pudu pued puer pueu punc pund pune punu punx pupe pupu pur- purb pure purp purr puru puuc puxe pxdn rbbb rbbr rcbc rccb rccc rcdc rcde rcep rcnr rcpd rcrd rdbp rder rdpc rebb rebe rebu recc recd rece recp recr recu redc redd rede redr redu redx reeb reed reen reep rend rene renn renu repe repp repr repu rerd rere reru reue reup reuu reux rexx rnbr rncp rndc rndp rpdp rppn rred rrrr rrun rubb rube rubp rubu ruce rudd rude rudp rued ruen ruer runc rund rune runn rupe rupp rurc rurd rure rurp ruru ruud ruun u-rp ubbe uber ubpc ubud ucbc uccp ucdc ucdd ucpb ucrc udbc uden uder udpd udun uend unbd unbe uncc unce uncp unde uneb unec uned unee unen uner unne unpc upbe uped upen upne upnp uppc uppe uppp uppu upup urbe urde urdu ure- ured urex urne urre urun urup urur uucp uuen uuuu uxue x-ed xbcd xbee xdcc xeer xen- xene xenn xenu xer- xexe xnee xpcc xper xrcd xrdb xrep xuxu xxxx