bbbb bbci bbdd bbeb bbrc bcbc bccc bcci bcde bcec bcer bcie bcru bcuc bd-r bdbc bddc bdii bebb bebe bebi beci becu bede bedi bedu beeb beed beer beic beir berc berd bere beri berr beru beur bibb bibe bibi bicc bice bici bide bidi bidr bidu bieb bied bier bieu birb bird bire biri birr biru brcb brce breb brec bred bree brei brer bric brid brie brrr bruc brud brue bubb bube bubi bubu bucc buce buci bucu budb budd bude budi budu buer bueu buic buid buie buir buiu bur- burb burd bure buri burr buru c-cd cbbc cbcc cbce cbcr cbcu cbdb cbdc cbdi cbec cbee cber cbid cbir cbrd cbre ccbc cccb cccc ccci cccu ccdc ccdi ccdr cced ccee ccic ccid ccii ccir ccrc ccre ccri ccuc cd-e cd-r cddb cddr cdec cder cdic cdii cdre cebu cec- cece ceci cedd cede cedi cedu ceeb ceec cer- cerc cerd cere ceri ceui cibc cibe cibi cicc cici cicr cicu cidc cide cidi cidr ciee cier ciid ciii cirb circ cire ciri cirr ciuc crbc crbu crcc crce crcr crdc cre- creb crec cred cree crei creu crib cric crie criu crub crud crue cub- cubb cube cubi cucc cuce cuci cude cudi cued cuer cui- cuir curb curd cure curi curr dbcc dcbc dccb dccc dcci dccu dcdb dcii dddd ddie ddrc ddre ddub debe debi debu dec- decc decd dece deci dedd dede dedi dedu deeb deed deer deid deie deir der- derb derc dere deri derr deue deur dibb dibe dice dici dide didi didu dieb died dier dieu diii dird dire dirr drbc dred dree drei drib dric drie drub drue drui druu dub- dubb dubc dube dubu duce dudd dude dudu duer duid duir dure duri duru duur ebbc ebbr ebcc ebed eber ebic ebid ebru ebur ecbc ecbe eccb eccc ecce ecci ecdc eced ecib ecrc ecri ecrr ecru eddc edde eddi ede- edei eder edie edru educ edur eede eedu eeee eerc eid- eide eidi eidr eidu eiec eied eiei eier eird eire erbb erbe ercc erce erde erdi ereb erec ered erei erer eric erie eriu errc erre erub eruc erur eubc eubi eucd eude euer eur- eurc eure i-be ibec ibed ibid ibie ibrc ibrd ibri icbc icbd iccb iccc icci iccr iccu icdc icdd icde icec iced icee icer icrc icre icrr icru icub icue idbe idce idcr idec ided idee ider idic idid idie idir idrc idre idub iecc iedr ieie iere ieri ieud iicd iide iied iiie iiii iirc iiuc irbe ircc ircd ircu irdc ired iree irer iri- iric irid irie irrc irre irri iucc iuce iuiu rbbb rbbr rcbc rccb rccc rcdc rcde rcic rcid rcrd rder rebb rebe rebu recc recd rece reci recr recu redc redd rede redi redr redu reeb reed reid reii reir reiu rerd rere reri reru reue reuu rib- ribe ribu ricc rice ridc ridd ride ridi ried rier rieu rire riri riue rred rrrr rubb rube rubi rubu ruce ruci rudd rude rudi rued ruer ruid rurc rurd rure ruri ruru ruud u-ie ubbe ubbi uber ubic ubid ubii ubir ubud ucbc ucci ucdc ucdd ucrc udbc uddi uder udic udid udir ueir uirr urbe urbi urci urde urdu ure- ured urib uric urie uriu urre urri urur uuri uuuu