bbbb bbdd bbeb bbrc bbrg bcbc bcbg bccc bcde bcec bcer bcru bcuc bd-r bdbc bddc bebb bebe beck becu bede bedu beeb beed beeg beek beer begg begu beke berc berd bere berg berk berr beru beuk beur bkgd brcb brce breb brec bred bree breg brek brer brkb brrr bruc brud brue brug bubb bube bubu bucc buce buck bucu budb budd bude budg budu buer bueu buge bugg buke bukk buku bur- burb burd bure burg burk burr buru c-cd cbbc cbcc cbce cbcr cbcu cbdb cbdc cbec cbee cber cbgb cbkg cbkr cbrd cbre ccbc cccb cccc cccu ccdc ccdr cced ccee ccgc ccrc ccre ccrg ccuc cd-e cd-r cddb cddr cdec cder cdre cebu cec- cece cedd cede cedu ceeb ceec cege ceke cer- cerc cerd cere cgcc cgcg cged cger ckbc ckbe ckck ckdu cker ckrc ckrd crbc crbu crcc crce crcr crdc cre- creb crec cred cree creg creu crkc crub crud crue crug cruk cub- cubb cube cucc cuce cuck cude cued cuek cuer cuk- cuke curb curd cure curr dbcc dcbc dccb dccc dccu dcdb dcrk dddd ddrc ddre ddub debe debu dec- decc decd dece deck dedd dede dedu deeb deed deeg deek deer dege degu dek- deke der- derb derc dere derg derk derr deue deuk deur dgeg dgge dgkb dgkd dgkg dkdc drbc dred dree dreg drek drge drub drue drug druk druu dub- dubb dubc dube dubu duce duck dudd dude dudu duer dugu duke duku dure durg durk duru duur ebbc ebbr ebcc ebed eber ebru ebur ecbc ecbe eccb eccc ecce ecdc eced ecrc ecrr ecru eddc edde ede- eder edge edru educ edur eede eedu eeee eeke eerc eerg egbe egbu egcc egcg egcr egec egee eger eggb egge egre ekeb eked ekek eker ekur erbb erbe ercc erce erde ereb erec ered erer erg- ergg erke errc erre erub eruc erur eubc eucd eude euer euge eur- eurc eure gbde gc-c gcbc gccc gcrg gddb gdrc gebe gece geck gedd gede gedu geed geek geer gege gegg gerb gerd gere geru geue gggg grbr grcc grce grdc greb grec gree greg greu grrr grub grue grug grur gubb gubu guck gude gudu guer gugb guge gugg gugu gurb gurd gure gurg gurk gurr guru kbbb kbbc kbbd kbbe kbbg kbbk kbbr kbbu kbcb kbce kbck kbcr kbcu kbdb kbde kbdg kbdr kbeb kbec kbed kbee kbek kber kbgb kbge kbgg kbgr kbkb kbkg kbkk kbkr kbrb kbrc kbrd kbre kbrg kbrk kbru kbub kbuc kbud kbue kbuk kbur kbuu kcbc kcbd kcbk kcbr kcbu kccb kccc kccd kcck kccr kccu kcdc kcdd kcdr kcdu kceb kcec kced kcee kceg kceu kcgc kcgr kckc kckk kckr kcrc kcrg kcrr kcru kcub kcue kcuk kdbb kdbg kdbr kdcc kdcd kdce kdcr kddb kddc kddd kddg kddk kddr kdeb kdec kdge kdkb kdkd kdkk kdkr kdrb kdub kduc kdug kdur kebb kebc kebe kebr kebu kecg keck kecr kedb kedc kedd kede kedg kedr keed keek keer kege kegg kegk kegr kekb kekc keke keku ker- kerb kerc kere kerk kerr keru keug keur kgbb kgbc kgbr kgcb kgcc kgcd kgce kgcr kgdb kgdc kgdd kgeb kgec kged kggg kggr kgrb kgrc kgrd kgre kgrg kgrk kgrr kgud kkbb kkbd kkbe kkbg kkbr kkcb kkcd kkck kkcr kkdc kkdd kkdg kked kkeg kkgb kkgr kkkk kkrb kkrc kkre kkrk kkrr kkuu krbb krbd krbe krbg krbk krbr krcb krcc krcd krce krcg krcu krdc krdd krde krdg krdr krdu kreb krec kred kree krek kreu krkc krkd krke krkk krkr krku krrb krrc krre krrg krrk krrr kruc krue krug kruk krur kubb kubc kubd kube kubr kubu kucb kucc kucd kuce kucr kudd kude kudu kued kuek kueu kugb kuge kugr kuke kukk kuku kurb kurd kure kurk kurr kuru kuub kuuk kuur kuuu rbbb rbbr rcbc rccb rccc rcdc rcde rcgc rcrd rcrg rder rebb rebe rebk rebu recc recd rece reck recr recu redc redd rede redr redu reeb reed reek regd rege regr regu reke rerd rere rerg reru reue reuk reuu rgbe rred rrrr rubb rube rubu ruce ruck rudd rude rued ruer ruge rugg ruke rukk ruku rurc rurd rure ruru ruud ubbe ubek uber ubud ucbc ucdc ucdd ucrc udbc uder udgb udge uduk ugcc ugcg ugur uguu ukcc ukek ukeu ukrc ukur urbe urde urdu ure- ured urge urgu urke urre uruk urur uuuu