-er b-u bbb bbc bbe bbf bbm bbn bbr bbu bcb bcc bce bcf bcm bcn bcr bcu be- beb bec bee bef bem ben ber beu bfb bfc bfe bff bfm bfn bfr bfu bmb bmc bme bmf bmm bmn bmr bmu bnb bnc bne bnf bnn bnr bnu brb bre brf brm brn brr bru bub buc bue buf bum bun bur buu c-- cbb cbc cbe cbf cbm cbn cbr cbu ccb ccc cce ccf ccm ccn ccr ccu ce- ceb cec cee cef cem cen cer ceu cfb cfc cfe cff cfm cfn cfr cfu cmb cmc cme cmf cmm cmn cmr cmu cn- cnb cnc cne cnf cnm cnn cnr cnu crb crc cre crf crm crn crr cru cub cuc cue cuf cum cun cur cuu ebb ebc ebe ebf ebm ebn ebr ebu ec- ecb ecc ece ecf ecm ecn ecr ecu eeb eec eee eef eem een eer ef- efb efc efe eff efm efr em- emb emc eme emf emm emn emr emu en- enb enc ene enf enm enn enr enu erb erc ere erf erm ern err eru eu- eub euc eue euf eun eur fbb fbc fbe fbf fbm fbn fbr fbu fcb fcc fce fcf fcm fcn fcr fcu feb fec fee fef fem fen fer feu ffc ffe fff ffm ffn ffr ffu fmb fmc fme fmf fmm fmn fmr fmu fnb fnc fne fnf fnm fnn fnr fnu frb frc fre frf frm frn frr fru fub fue fuf fum fun fur fuu m-f m-r mbb mbc mbe mbf mbm mbr mbu mc- mcb mcc mce mcf mcm mcn mcr mcu meb mec mee mef mem men mer meu mfb mfc mfe mff mfm mfn mfr mfu mmb mmc mme mmf mmm mmn mmr mmu mnb mnc mne mnf mnm mnn mnr mnu mrb mrc mre mrf mrm mrn mrr mru mub muc mue muf mum mun mur muu nbb nbc nbe nbf nbm nbn nbr nbu ncb ncc nce ncf ncm ncn ncr ncu ne- neb nec nee nef nem nen ner neu nfb nfc nfe nff nfn nfr nfu nmb nmc nme nmm nmn nmr nmu nnb nnc nne nnf nnm nnn nnu nrb nrc nre nrf nrm nrn nrr nru nub nuc nue num nun nur nuu rbb rbc rbe rbf rbm rbn rbr rbu rcb rcc rce rcf rcm rcn rcr rcu re- reb rec ree ref rem ren rer reu rfb rfc rfe rff rfm rfn rfr rfu rmb rmc rme rmf rmm rmn rmr rnb rnc rnm rnn rnr rnu rrb rrc rrf rrm rrn rrr rru rub ruc rue ruf rum run rur ruu ubb ubc ube ubf ubn ubr ubu ucb ucc uce ucf ucm ucn ucr ucu ueb uec uee uef uem uen uer ufc ufe uff ufm ufn ufr ufu um- umb umc ume umf umm umn umr umu un- unb unc une unf unm unn unr unu ur- urb urc ure urf urm urn urr uru uuc uue uum uun uur uuu

-ene bbbb bbcm bbeb bbfc bbfn bbrc bcbc bccc bccm bcec bcer bcfc bcfm bcnu bcru bcuc bebb bebe becu beeb beef beem been beer befe beff beme bemu bene benn benu berc bere berm bern berr beru beur bfme bmce bmfc bner bnrr brcb brce breb brec bree bref brem bren brer brfc brfm brfu brmc brrm brrr bruc brue brum brun bubb bube bubu bucc buce bucu buem buen buer bueu bufc bufe buff bufr bum- bumb bumf bunb bune bunn bunu bur- burb bure burm burn burr buru cbbc cbcc cbce cbcm cbcn cbcr cbcu cbec cbee cbef cber cbfb cbfc cbme cbre cbrm cbrn ccbc ccbn cccb cccc cccf cccm cccu ccee ccfc ccff ccmb ccmc ccmm ccnb ccnc ccne ccnf ccnm ccnr ccnu ccrc ccre ccrf ccuc cebu cec- cece cecm ceeb ceec ceem cef- cefc cefn cemb ceme cemm cemr cemu cen- cene cer- cerc cere cerf cern cfbc cfbn cfbr cfcb cfcf cfcm cfcn cffb cffr cfmb cfmu cfnb cfnm cfnr cfrb cfre cfrn cfun cmbc cmcc cmec cmfb cmmb cmmc cmmn cmrn cmrr cnbc cnbm cnrc cnrr crbc crbu crcc crce crcr cre- creb crec cree crem cren creu crfc crmb crmn crne crub crue crum crun cub- cubb cube cucc cuce cucm cucn cuer cufc cuff cum- cume cune curb cure curf curn curr ebbc ebbr ebcc eben eber ebfc ebru ebur ecbc ecbe eccb eccc ecce eccm ecef ecem ecfc ecfr ecne ecrc ecrf ecrm ecrr ecru eeee eefe eefn eerc efbr efen embe embr emcc emcf emcn emen emer emeu emme emmu emne emre enb- enbn enbr ence enee enem ener enfb ennc enne ennu enue enuf enum enur erbb erbe ercc erce ereb erec erem eren erer erfc ermc erme erne errc erre erub eruc erum erur eubc euer eufc eumc eur- eurc eure fccf fcmr fece feeb feem feen feer fefc fefe feff femb feme femm fene fenn ferb ferc fere ferm fern ferr feru ffcc ffee ffff ffrr ffun fnuf frbc frcc frcn free frem fren frfc frmn frub frue frum frun fubb fubu fuc- fucm fufc fuff fufu fumc fume fune funf fur- fure furm furn furr mcbc mccc mcef mcfc mcmc mcrc mebe mec- mecc mece mecr meef meem meen meer mefe meff memc meme memr memu men- menc mene menn menu mer- merb merc mere merf merm mern meru meum mfbm mfcc mmcc mmcm mmen mmff mmmc mmmm mmrc mmrf mmun mnbb mnem mr-c mrbb mrbm mrcb mrcc mrce mreb mree mren mrfc mrmc mrnc mrrc mube muc- mucc muce mucu muee mufc muff mufu mume mumm mumu munc mune munn munu murc mure murn murr muru nbbc nbcc nber nbfc nbuf ncbc nccc nccf nccn nccr nccu ncec ncee ncef ncem ncen ncer ncfc ncfe ncmm ncnc ncrc ncre ncue nebb nebe nebn nebr nebu necc nece necr neeb neef neem neen neer nefe neff nefm nem- neme nemn nemu nene nenu nerc nere