-er b-u bbb bbc bbe bbh bbm bbn bbr bbu bcb bcc bce bch bcm bcn bcr bcu be- beb bec bee beh bem ben ber beu bhb bhc bhe bhh bhm bhr bhu bmb bmc bme bmh bmm bmn bmr bmu bnb bnc bne bnn bnr bnu brb bre brh brm brn brr bru bub buc bue buh bum bun bur buu c-- cbb cbc cbe cbh cbm cbn cbr cbu ccb ccc cce cch ccm ccn ccr ccu ce- ceb cec cee ceh cem cen cer ceu ch- chb chc che chh chm chn chr chu cmb cmc cme cmh cmm cmn cmr cmu cn- cnb cnc cne cnh cnm cnn cnr cnu crb crc cre crh crm crn crr cru cub cuc cue cuh cum cun cur cuu ebb ebc ebe ebh ebm ebn ebr ebu ec- ecb ecc ece ech ecm ecn ecr ecu eeb eec eee eem een eer ehb ehc ehe ehh ehm ehn ehr ehu em- emb emc eme emh emm emn emr emu en- enb enc ene enh enm enn enr enu erb erc ere erh erm ern err eru eu- eub euc eue eun eur hbb hbc hbe hbh hbm hbn hbr hbu hcb hcc hce hch hcm hcn hcr he- heb hec hee heh hem hen her heu hhb hhc hhe hhh hhm hhn hhr hhu hmb hmc hme hmh hmm hmr hmu hnb hnc hne hnh hnn hnu hr- hrb hrc hre hrh hrm hrn hrr hru hub huc hue huh hum hun hur huu m-r mbb mbc mbe mbh mbm mbr mbu mc- mcb mcc mce mch mcm mcn mcr mcu meb mec mee meh mem men mer meu mhc mhh mhm mhn mhr mhu mmb mmc mme mmh mmm mmn mmr mmu mnb mnc mne mnm mnn mnr mnu mrb mrc mre mrh mrm mrn mrr mru mub muc mue muh mum mun mur muu nbb nbc nbe nbm nbn nbr nbu ncb ncc nce nch ncm ncn ncr ncu ne- neb nec nee neh nem nen ner neu nhb nhc nhe nhh nhm nhn nhr nhu nmb nmc nme nmh nmm nmn nmr nmu nnb nnc nne nnh nnm nnn nnu nrb nrc nre nrm nrn nrr nru nub nuc nue nuh num nun nur nuu rbb rbc rbe rbh rbm rbn rbr rbu rcb rcc rce rch rcm rcn rcr rcu re- reb rec ree reh rem ren rer reu rh- rhb rhc rhe rhh rhm rhn rhr rhu rmb rmc rme rmh rmm rmn rmr rnb rnc rnh rnm rnn rnr rnu rrb rrc rrh rrm rrn rrr rru rub ruc rue ruh rum run rur ruu ubb ubc ube ubh ubn ubr ubu ucb ucc uce uch ucm ucn ucr ucu ueb uec uee ueh uem uen uer uhb uhc uhe uhh uhm uhr uhu um- umb umc ume umh umm umn umr umu un- unb unc une unh unm unn unr unu ur- urb urc ure urm urn urr uru uuc uue uum uun uur uuu

-ene bbbb bbch bbcm bbeb bbrc bcbc bccc bccm bcec bcer bche bcnu bcru bcuc bebb bebe bech becu beeb beem been beer behm behn behr beme bemu bene benn benu berc bere berm bern berr beru beur bhcc bher bhur bhuu bmce bmnh bner bnrr brcb brce breb brec bree brem bren brer brmc brrm brrr bruc brue bruh brum brun bubb bube bubu bucc buce buch bucu buem buen buer bueu buhe buhr bum- bumb bunb bune bunn bunu bur- burb bure burh burm burn burr buru cbbc cbcc cbce cbcm cbcn cbcr cbcu cbec cbee cber cbme cbre cbrh cbrm cbrn ccbc ccbn cccb cccc cccm cccu ccee cche cchr ccmb ccmc ccmm ccnb ccnc ccne ccnm ccnr ccnu ccrc ccre ccuc cebu cec- cece cecm ceeb ceec ceem cemb ceme cemm cemr cemu cen- cene cer- cerc cere cern chce chch chcm cheb chec chee cheh chem chen cher cheu chmb chmc chmn chnb chnc chnm chnr chrb chrc chrn chrr chub chum chun chur cmbc cmcc cmec cmhc cmmb cmmc cmmn cmnh cmrn cmrr cnbc cnbm cnrc cnrr crbc crbu crcc crce crcr cre- creb crec cree creh crem cren creu crmb crmn crne crub crue crum crun cub- cubb cube cucc cuce cucm cucn cuer cum- cume cune curb cure curn curr ebbc ebbr ebcc eben eber ebru ebur ecbc ecbe eccb eccc ecce eccm ecem eche ecne ecrc ecrm ecrr ecru eeee eerc ehcc eheh ehen eher eheu ehre embe embr emcc emcn emen emer emeu emhc emme emmu emne emre enb- enbn enbr ence ench enee enem ener ennc enne ennu enue enum enur erbb erbe ercc erce erch ereb erec erem eren erer erhc erhu ermc erme erne errc erre erub eruc eruh erum erur eubc euch euer eumc eur- eurc eure hcbc hccb hccc hcch hcmc hcmm hebb hebe hebr hech heeb heem heer hehe hehn hem- heme hemu hene henh henn henu herb herc here herm hern herr heru heue heun heur hhhh hmhb hmmm hmun hnce hree hrrc hrun hubb hube huch hucu huer huhn huhu hume humh humm hunc hune hunh hure hurn hurr huru huub mcbc mccc mcmc mcrc mebe mec- mecc mece mech mecr meem meen meer mehe mehr mehu memc meme memr memu men- menc mene menn menu mer- merb merc mere merm mern meru meum mhem mhmm mhmr mmcc mmcm mmen mmhm mmmc mmmh mmmm mmrc mmun mnbb mnem mr-c mrbb mrbm mrcb mrcc mrce mreb mree mren mrmc mrnc mrrc mube muc- mucc muce much mucu muee muhr muhu mume mumm mumu munc mune munn munu murc mure murn murr muru nbbc nbcc nber nbhm ncbc nccc nccn nccr nccu ncec ncee ncem ncen ncer nchc ncmh ncmm ncnc ncrc ncre ncue nebb nebe nebn nebr nebu necc nece nech necr neeb neem neen neer nehe nehu nem- neme nemn nemu nene nenh nenu nerc nere nerm nerr neru neuc neue neum neun neur neuu nhcc nheb nhmc