-er b-u bbb bbc bbe bbk bbm bbr bbu bcb bcc bce bck bcm bcr bcu be- beb bec bee bek bem ber beu bkb bkc bke bkk bkm bkr bmb bmc bme bmk bmm bmr bmu brb bre brk brm brr bru bub buc bue buk bum bur buu c-- cbb cbc cbe cbk cbm cbr cbu ccb ccc cce cck ccm ccr ccu ce- ceb cec cee cek cem cer ceu ckb ckc ckm cmb cmc cme cmk cmm cmr cmu crb crc cre crk crm crr cru cub cuc cue cuk cum cur cuu ebb ebc ebe ebk ebm ebr ebu ec- ecb ecc ece eck ecm ecr ecu eeb eec eee eek eem eer ekb ekc eke ekr eku em- emb emc eme emk emm emr emu erb erc ere erk erm err eru eu- eub euc eue eur kbb kbc kbe kbk kbm kbr kbu kcb kcc kce kck kcm kcr kcu ke- keb kec kee kek kem ker kkb kkc kke kkk kkm kkr kku kmb kmc kme kmk kmm kmu krc krk krr kru kub kuc kue kuk kum kur kuu m-r mbb mbc mbe mbk mbm mbr mbu mc- mcb mcc mce mck mcm mcr mcu meb mec mee mek mem mer meu mkb mkc mke mkk mkm mkr mku mmb mmc mme mmk mmm mmr mmu mrb mrc mre mrk mrm mrr mru mub muc mue muk mum mur muu rbb rbc rbe rbk rbm rbr rbu rcb rcc rce rcm rcr rcu re- reb rec ree rek rem rer reu rkb rkc rke rkk rkm rku rmb rmc rme rmm rmr rrb rrc rrk rrm rrr rru rub ruc rue ruk rum rur ruu ubb ubc ube ubk ubr ubu ucb ucc uce uck ucm ucr ucu ueb uec uee uem uer ukb ukc uke ukk ukr uku um- umb umc ume umm umr umu ur- urb urc ure urk urm urr uru uuc uue uum uur uuu

bbbb bbcm bbeb bbrc bcbc bccc bccm bcec bcer bcru bcuc bebb bebe beck becu beeb beek beem beer beke beme bemu berc bere berk berm berr beru beuk beur bmce brcb brce breb brec bree brek brem brer brkb brmc brrm brrr bruc brue brum bubb bube bubu bucc buce buck bucu buem buer bueu buke bukk buku bum- bumb bur- burb bure burk burm burr buru cbbc cbcc cbce cbcm cbcr cbcu cbec cbee cber cbkm cbkr cbme cbre cbrm ccbc cccb cccc cccm cccu ccee cckm ccmb ccmc ccmm ccrc ccre ccuc cebu cec- cece cecm ceeb ceec ceem ceke cemb ceme cemm cemr cemu cer- cerc cere ckbc ckbe ckck ckcm ckem cker ckrc ckrm cmbc cmcc cmec cmmb cmmc cmrr crbc crbu crcc crce crcr cre- creb crec cree crem creu crkc crmb crub crue cruk crum cub- cubb cube cucc cuce cuck cucm cuek cuer cuk- cuke cum- cume curb cure curr ebbc ebbr ebcc eber ebru ebur ecbc ecbe eccb eccc ecce eccm ecem ecrc ecrm ecrr ecru eeee eeke eerc ekeb ekek eker ekur embe embr emcc emek emer emeu emme emmu emre erbb erbe ercc erce ereb erec erem erer erke ermc erme errc erre erub eruc erum erur eubc euer eumc eur- eurc eure kbbb kbbc kbbe kbbk kbbm kbbr kbbu kbcb kbce kbck kbcr kbcu kbeb kbec kbee kbek kber kbkb kbkk kbkr kbmb kbmc kbme kbmr kbrb kbrc kbre kbrk kbru kbub kbuc kbue kbuk kbur kbuu kcbc kcbk kcbr kcbu kccb kccc kcck kccr kccu kceb kcec kcee kceu kckc kckk kckm kckr kcmb kcmc kcme kcmk kcmm kcmr kcrc kcrr kcru kcub kcue kcuk kebb kebc kebe kebr kebu keck kecr keek keem keer kekb kekc keke keku kemb kemc keme kemm kemr kemu ker- kerb kerc kere kerk kerm kerr keru keur kkbb kkbe kkbr kkcb kkck kkcm kkcr kkkk kkmc kkmk kkmr kkrb kkrc kkre kkrk kkrr kkuu kmbc kmbr kmcb kmcc kmce kmcm kmcr kmcu kmem kmer kmke kmkk kmme kmmk kmmm kmmr kmrb kmrc kmrr kmuc kmue kmur krbb krbe krbk krbm krbr krcb krcc krce krcm krcu kreb krec kree krek krem kreu krkc krke krkk krkr krku krmb krmc krme krmr krrb krrc krre krrk krrm krrr kruc krue kruk krum krur kubb kubc kube kubr kubu kucb kucc kuce kucr kuek kueu kuke kukk kuku kume kumm kumr kumu kurb kure kurk kurm kurr kuru kuub kuuk kuur kuuu mcbc mccc mckk mcmc mcrc mebe mec- mecc mece meck mecr meek meem meer meke memc meme memr memu mer- merb merc mere merk merm meru meum mker mmcc mmcm mmmc mmmm mmrc mr-c mrbb mrbm mrcb mrcc mrce mreb mree mrkr mrmc mrrc mruk mube muc- mucc muce muck mucu muee muke mume mumm mumu murc mure murk murr muru rbbb rbbr rbmk rcbc rccb rccc rebb rebe rebk rebu recc rece reck recm recr recu reeb reek reem reke reme rere reru reue reuk reuu rrkm rrmc rrrr rrum rubb rube rubu ruce ruck ruer ruke rukk ruku rumb rume rumm rurc rure ruru ubbe ubek uber ucbc ucmc ucrc ukcc ukek ukeu ukrc ukum ukur umb- umbe umec umer urbe ure- urke urre uruk urum urur uuuu

b-r-k bbbee be-er bebek beber becke becue becum beebe beeke beker bekke bembe bemer berbe berck bercu berec berek berk- berke berme berre berru berum beuer beure brebu brece breck breek breem breer breke breme bremm brere breu- brmmm brrrr bruce bruck bruer bruke brume brumm bubbe buber bucek bucku bucum bucur buker bukk- bumbu bumme burck burcu burek burke burru buruc buruk ccccc cebec ceber cecum ceere cemec cemre cerbu cerc- cerce cerec cerer cerke cerre cmere crebe crece creek creem creer creke creme creu- creue cruce cruck cruke crumb crume crure cubbe cubeb cuber cubub cucuk cuker cumbe cumbu cumec cumm- curce curer curre ebber ebure ecker ecume eecke eeeee eembc ekker ekmek ekrem ekuku ekuru embee ember embue emcee emeer emere emerk emmer emure erbbe erber erem- erere erkec