-er b-u bbb bbc bbd bbe bbg bbk bbr bbs bbu bcb bcc bcd bce bcg bck bcr bcs bcu bdb bdc bdd bde bdg bdk bdr bds bdu be- beb bec bed bee beg bek ber bes beu bgb bgc bgd bge bgg bgk bgr bgs bgu bkb bkc bke bkg bkk bkr bks brb brd bre brg brk brr brs bru bsb bsc bsd bse bsg bsk bsr bss bsu bub buc bud bue bug buk bur bus buu c-- cbb cbc cbd cbe cbg cbk cbr cbs cbu ccb ccc ccd cce ccg cck ccr ccs ccu cdb cdc cdd cde cdg cdk cdr cds cdu ce- ceb cec ced cee ceg cek cer ces ceu cgb cgc cgd cge cgg cgr cgs cgu ckb ckc ckd cks crb crc crd cre crg crk crr crs cru csb csc csd cse csg csk csr css csu cub cuc cud cue cug cuk cur cus cuu dbb dbc dbd dbe dbg dbk dbr dbs dbu dcb dcc dcd dce dcg dck dcr dcs dcu ddb ddc ddd dde ddg ddk ddr dds ddu de- deb dec ded dee deg dek der des deu dgc dgd dge dgg dgk dgr dgs dgu dkb dkc dke dkg dkk dkr dks dku drb drc drd dre drg drk drr drs dru dsb dsc dsd dse dsg dsk dsr dss dsu dub duc dud due dug duk dur dus ebb ebc ebd ebe ebg ebk ebr ebs ebu ec- ecb ecc ecd ece ecg eck ecr ecs ecu ed- edb edc edd ede edg edk edr eds edu eeb eec eed eee eeg eek eer ees egb egc egd ege egg egr egs egu ekb ekc ekd eke ekg ekr eks eku erb erc erd ere erg erk err ers eru es- esb esc esd ese esg esk esr ess esu eu- eub euc eud eue eug eur eus g-d gbc gbd gbe gbg gbk gbr gbs gbu gcb gcc gcd gce gcg gck gcr gcs gcu gdb gdc gdd gde gdk gdr gds gdu ge- geb gec ged gee geg gek ger ges geu ggb ggc ggd ggg ggr ggs ggu gkb gkd gks grb grc grd gre grg grk grr grs gru gsb gsc gsd gse gsg gsk gsr gss gsu gu- gub guc gud gue gug guk gur gus guu kbb kbc kbd kbe kbk kbr kbs kbu kcb kcc kcd kce kcg kck kcr kcs kcu kdb kdc kde kdg kdk kdr kds kdu ke- keb kec ked kee keg kek ker kes kgb kgc kgd kgs kgu kkb kkc kke kkk kkr kks kku krc krd krg krk krr krs kru ksb ksc ksd kse ksg ksk ksr kss ksu kub kuc kud kue kug kuk kur kus kuu rbb rbc rbd rbe rbg rbk rbr rbs rbu rcb rcc rcd rce rcg rcr rcs rcu rdb rdc rdd rde rdg rdr rds rdu re- reb rec red ree reg rek rer res reu rgb rgc rgd rge rgg rgk rgr rgs rkb rkc rke rkg rkk rks rku rrb rrc rrd rrg rrk rrr rrs rru rsb rsc rsd rse rsg rsk rsr rss rsu rub ruc rud rue rug ruk rur rus ruu sbb sbc sbd sbe sbg sbk sbr sbs sbu scb scc scd sce scg sck scr scs scu sdb sdc sdd sde sdg sdk sdr sds sdu se- seb sec sed see seg sek ser ses seu sgb sgc sgd sge sgg sgk sgr sgs sgu sk- skb skc skd ske skg skk skr sks sku sr- srb src srd sre srg srk srr srs ss- ssb ssc ssd sse ssg ssk ssr sss ssu sub suc sud sue sug suk sur sus suu ubb ubc ube ubg ubk ubr ubs ubu ucb ucc ucd uce ucg uck ucr ucs ucu udb udc udd ude udg udk udr uds udu ueb uec ued uee ueg uer ues ugb ugc uge ugg ugk ugr ugs ugu ukb ukc uke ukk ukr uku ur- urb urc urd ure urg urk urr urs uru usb usc usd use usg usk usr uss usu uuc uue uug uur uus uuu

bbbb bbbs bbdd bbeb bbrc bbrg bcbc bcbg bcbs bccc bccs bcde bcds bcec bcer bces bcgs bcrs bcru bcsc bcss bcuc bd-r bdbc bddc bdes bdsd bebb bebe beck becs becu bede beds bedu beeb beed beeg beek beer bees begg begs begu beke beks berc berd bere berg berk berr bers beru bes- bese besk bess beuk beur bggs bkgd brcb brce brds breb brec bred bree breg brek brer bres brkb brrr brrs brsb brsr bruc brud brue brug brus bsbd bscs bseb bsec bsed bsee bseg bser bses bsgs bsrd bssc bssd bsse bubb bube bubs bubu bucc buce buck bucs bucu budb budd bude budg buds budu buer bueu buge bugg bugs buke bukk buku bur- burb burd bure burg burk burr burs buru busc buse busk buss busu buus c-cd cbbc cbbs cbcc cbce cbcr cbcs cbcu cbdb cbdc cbds cbec cbee cber cbgb cbkg cbkr cbrd cbre cbsc cbse cbus ccbc cccb cccc cccs cccu ccdc ccdr ccds cced ccee ccgc ccgs ccrc ccre ccrg ccrs ccsd ccsg ccss ccuc ccus cd-e cd-r cdcs cddb cddr cdec cder cdes cdre cdrs cdss cebs cebu cec- cece cecs cedd cede cedu ceeb ceec cees cege ceke cer- cerc cerd cere cers cesc cese cesg cesr cess cgcc cgcg cged cger cges cggs cgsb cgss ckbc ckbe ckck ckcs ckdu cker ckrc ckrd cksb crbc crbu crcc crce crcr crdc cre- creb crec cred cree creg cres creu crgs crkc crss crub crud crue crug cruk crus cscb cscc cscd csce cscr cscs csdb csdr csec csee cser csks csrc csrd csrs cssd csse cssr csur csus cub- cubb cube cubs cucc cuce cuck cude cuds cued cuek cuer cues cuk- cuke curb curd cure curr curs cusb cusd cusg cusk cuss cusu dbcc dbcs dbrs dbss dbus dcbc dccb dccc