bbbb bbcm bbdd bbeb bbrc bcbc bccc bccm bcde bcec bcer bcru bcuc bd-r bdbc bddc bdrm bebb bebe becu bede bedu beeb beed beem beer beme bemu berc berd bere berm berr beru beur bmce bmdb brcb brce brdm breb brec bred bree brem brer brmc brrm brrr bruc brud brue brum bubb bube bubu bucc buce bucu budb budd bude budu buem buer bueu bum- bumb bur- burb burd bure burm burr buru c-cd cbbc cbcc cbce cbcm cbcr cbcu cbdb cbdc cbec cbee cber cbme cbrd cbre cbrm ccbc cccb cccc cccm cccu ccdc ccdm ccdr cced ccee ccmb ccmc ccmd ccmm ccrc ccre ccuc cd-e cd-r cddb cddr cdec cder cdre cebu cec- cece cecm cedd cede cedu ceeb ceec ceem cemb ceme cemm cemr cemu cer- cerc cerd cere cmbc cmcc cmdb cmdr cmec cmmb cmmc cmrr crbc crbu crcc crce crcr crdc cre- creb crec cred cree crem creu crmb crub crud crue crum cub- cubb cube cucc cuce cucm cude cued cuer cum- cume curb curd cure curr dbcc dcbc dccb dccc dccu dcdb dcmu dddd ddrc ddre ddub debe debu dec- decc decd dece dedd dede dedu deeb deed deem deer dem- demb demd deme demu der- derb derc dere derm derr deue deum deur dmcc dmcm dmdc dmrb dmrc drbc dred dree drem drub drue drum druu dub- dubb dubc dube dubu duce dudd dude dudu duer dumb dume dumm dure duru duur ebbc ebbr ebcc ebed eber ebru ebur ecbc ecbe eccb eccc ecce eccm ecdc eced ecem ecrc ecrm ecrr ecru eddc edde eddm ede- edem eder edme edrm edru educ edur eede eedu eeee eerc embd embe embr emcc emer emeu emme emmu emre erbb erbe ercc erce erde ereb erec ered erem erer ermc erme errc erre erub eruc erum erur eubc eucd eude eudm euer eumc eur- eurc eure mbdb mbed mcbc mccc mccd mcdc mcdd mcde mced mcmc mcrc mcrd mdcc mddm mdmc mdme mdrc mdud mebe mec- mecc mecd mece mecr medb medd mede medu meed meem meer memc meme memr memu mer- merb merc merd mere merm meru meum mmcc mmcd mmcm mmdb mmdc mmmc mmmd mmmm mmrc mr-c mrbb mrbm mrcb mrcc mrce mrdd mreb mred mree mrmc mrmd mrrc mrud mube muc- mucc muce mucu mudd mude mudu mued muee mume mumm mumu murc murd mure murr muru rbbb rbbr rcbc rccb rccc rcdc rcde rcrd rdbm rdcm rder rebb rebe rebu recc recd rece recm recr recu redc redd rede redr redu reeb reed reem reme rerd rere reru reue reuu rred rrmc rrrr rrum rubb rube rubu ruce rudd rude rued ruer rumb rume rumm rurc rurd rure ruru ruud ubbe uber ubud ucbc ucdc ucdd ucmc ucrc udbc udem uder udmc umb- umbe umde umec umer urbe urde urdu ure- ured urre urum urur uuuu