-er b-u bbb bbc bbe bbm bbn bbr bbs bbu bcb bcc bce bcm bcn bcr bcs bcu be- beb bec bee bem ben ber bes beu bmb bmc bme bmm bmn bmr bms bmu bnb bnc bne bnn bnr bns bnu brb bre brm brn brr brs bru bsb bsc bse bsm bsn bsr bss bsu bub buc bue bum bun bur bus buu c-- cbb cbc cbe cbm cbn cbr cbs cbu ccb ccc cce ccm ccn ccr ccs ccu ce- ceb cec cee cem cen cer ces ceu cmb cmc cme cmm cmn cmr cms cmu cn- cnb cnc cne cnm cnn cnr cns cnu crb crc cre crm crn crr crs cru csb csc cse csm csn csr css csu cub cuc cue cum cun cur cus cuu ebb ebc ebe ebm ebn ebr ebs ebu ec- ecb ecc ece ecm ecn ecr ecs ecu eeb eec eee eem een eer ees em- emb emc eme emm emn emr ems emu en- enb enc ene enm enn enr ens enu erb erc ere erm ern err ers eru es- esb esc ese esm esn esr ess esu eu- eub euc eue eun eur eus m-r mbb mbc mbe mbm mbr mbs mbu mc- mcb mcc mce mcm mcn mcr mcs mcu meb mec mee mem men mer mes meu mmb mmc mme mmm mmn mmr mms mmu mnb mnc mne mnm mnn mnr mns mnu mrb mrc mre mrm mrn mrr mrs mru msb msc mse msm msn msr mss msu mub muc mue mum mun mur mus muu nbb nbc nbe nbm nbn nbr nbs nbu ncb ncc nce ncm ncn ncr ncs ncu ne- neb nec nee nem nen ner nes neu nmb nmc nme nmm nmn nmr nms nmu nnb nnc nne nnm nnn nns nnu nrb nrc nre nrm nrn nrr nrs nru nsb nsc nse nsm nsn nsr nss nsu nub nuc nue num nun nur nus nuu rbb rbc rbe rbm rbn rbr rbs rbu rcb rcc rce rcm rcn rcr rcs rcu re- reb rec ree rem ren rer res reu rmb rmc rme rmm rmn rmr rms rnb rnc rnm rnn rnr rns rnu rrb rrc rrm rrn rrr rrs rru rsb rsc rse rsm rsn rsr rss rsu rub ruc rue rum run rur rus ruu sbb sbc sbe sbm sbn sbr sbs sbu scb scc sce scm scn scr scs scu se- seb sec see sem sen ser ses seu smb smc sme smm smn smr sms smu snb snc sne snm snn snr sns snu sr- srb src sre srm srn srr srs ss- ssb ssc sse ssm ssn ssr sss ssu sub suc sue sum sun sur sus suu ubb ubc ube ubn ubr ubs ubu ucb ucc uce ucm ucn ucr ucs ucu ueb uec uee uem uen uer ues um- umb umc ume umm umn umr ums umu un- unb unc une unm unn unr uns unu ur- urb urc ure urm urn urr urs uru usb usc use usm usn usr uss usu uuc uue uum uun uur uus uuu

-ene bbbb bbbs bbcm bbeb bbrc bcbc bcbs bccc bccm bccs bcec bcer bces bcms bcnu bcrs bcru bcsc bcsm bcsn bcss bcuc bebb bebe becs becu beeb beem been beer bees beme bemu bene benn bens benu berc bere berm bern berr bers beru bes- bese besm bess beur bmce bmus bner bnrr bnss brcb brce breb brec bree brem bren brer bres brmc brns brrm brrr brrs brsb brsr bruc brue brum brun brus bscs bseb bsec bsee bser bses bsms bsns bsrm bssc bsse bssm bubb bube bubs bubu bucc buce bucs bucu buem buen buer bueu bum- bumb bums bunb bune bunn buns bunu bur- burb bure burm burn burr burs buru busc buse buss busu buus cbbc cbbs cbcc cbce cbcm cbcn cbcr cbcs cbcu cbec cbee cber cbme cbms cbre cbrm cbrn cbsc cbse cbsm cbsn cbus ccbc ccbn cccb cccc cccm cccs cccu ccee ccmb ccmc ccmm ccms ccnb ccnc ccne ccnm ccnr ccns ccnu ccrc ccre ccrs ccsn ccss ccuc ccus cebs cebu cec- cece cecm cecs ceeb ceec ceem cees cemb ceme cemm cemr cems cemu cen- cene cens cer- cerc cere cern cers cesc cese cesr cess cmbc cmbs cmcc cmcs cmec cmes cmmb cmmc cmmn cmms cmrn cmrr cmrs cmsc cmse cmsn cmus cnbc cnbm cnes cnrc cnrr cnss crbc crbu crcc crce crcr cre- creb crec cree crem cren cres creu crmb crmn crms crne crns crss crub crue crum crun crus csbm cscb cscc csce cscr cscs csec csee csem cser csmc csmu csne csrc csrs csse cssm cssr csum csur csus cub- cubb cube cubs cucc cuce cucm cucn cuer cues cum- cume cums cune curb cure curn curr curs cusb cuss cusu ebbc ebbr ebbs ebcc eben eber ebes ebru ebur ebus ecbc ecbe eccb eccc ecce eccm ecem eces ecne ecrc ecrm ecrr ecru ecsc ecse ecss ecsu ecus eecs eeee eees eems eens eerc eers eese embe embr embs emcc emcn emcs emen emer emes emeu emme emms emmu emne emre emrs emse emus enb- enbn enbr ence encs enee enem ener enes ennc enne enns ennu enrs ense ensu enue enum enur enus erbb erbe ercc erce ereb erec erem eren erer eres ermc erme erms erne erns errc erre errs erse erub eruc erum erur erus esbs escb esce escm escr escs escu esee esem esen eser eses esme esmr esne esse essu esus eubc euer eumc eums eur- eurc eure euse mbbs mbcs mbes mbms mbrs mbus mcbc mccc mces mcmc mcrc mcse mcss mebe mec- mecc mece mecr mecs meem meen meer mees memc meme memr mems memu men- menc mene menn mens menu mer- merb merc mere merm mern mers meru mes- mesc mese mesr mess meum meus mmcc mmcm mmcs mmen mmes mmmc mmmm mmms mmrc mmsc mmse mmsu mmun mmus mnbb mnem mnse mr-c mrbb mrbm mrbs