-er b-u bbb bbc bbe bbr bbs bbu bcb bcc bce bcr bcs bcu bcz be- beb bec bee ber bes beu bez brb bre brr brs bru brz bsb bsc bse bsr bss bsu bub buc bue bur bus buu buz bze bzr bzs bzu bzz c-- cbb cbc cbe cbr cbs cbu cbz ccb ccc cce ccr ccs ccu ccz ce- ceb cec cee cer ces ceu cez crb crc cre crr crs cru crz csb csc cse csr css csu csz cub cuc cue cur cus cuu cuz cz- czc cze ebb ebc ebe ebr ebs ebu ec- ecb ecc ece ecr ecs ecu eeb eec eee eer ees erb erc ere err ers eru erz es- esb esc ese esr ess esu eu- eub euc eue eur eus eze ezr ezs ezz rbb rbc rbe rbr rbs rbu rcb rcc rce rcr rcs rcu re- reb rec ree rer res reu rez rrb rrc rrr rrs rru rsb rsc rse rsr rss rsu rub ruc rue rur rus ruu ruz rzb rze sbb sbc sbe sbr sbs sbu scb scc sce scr scs scu se- seb sec see ser ses seu sez sr- srb src sre srr srs ss- ssb ssc sse ssr sss ssu ssz sub suc sue sur sus suu suz sze szr szu ubb ubc ube ubr ubs ubu ucb ucc uce ucr ucs ucu ueb uec uee uer ues ur- urb urc ure urr urs uru urz usb usc use usr uss usu usz uuc uue uur uus uuu uzb uzu zbb zbc zbr zbs zce zcs zeb zec zee zer zes zez zrs zse zsu zsz zub zuc zur zus zuz zzr zzs zzz

bbbb bbbs bbeb bbrc bcbc bcbs bccc bccs bcec bcer bces bcrs bcru bcsc bcss bcuc bebb bebe becs becu beeb beer bees berc bere berr bers beru bes- bese bess beur beze bezu brcb brce breb brec bree brer bres brez brrr brrs brsb brsr bruc brue brus bruz bscs bseb bsec bsee bser bses bssc bsse bubb bube bubs bubu bucc buce bucs bucu bucz buer bueu bur- burb bure burr burs buru burz busc buse buss busu buus buuz buze buzz bzer bzzz cbbc cbbs cbcc cbce cbcr cbcs cbcu cbec cbee cber cbre cbsc cbse cbus ccbc cccb cccc cccs cccu ccee ccrc ccre ccrs ccss ccuc ccus cebs cebu cec- cece cecs ceeb ceec cees cer- cerc cere cers cesc cese cesr cess ceze crbc crbu crcc crce crcr crcz cre- creb crec cree cres creu crss crub crue crus cruz cscb cscc csce cscr cscs csec csee cser csrc csrs csse cssr csur csus cub- cubb cube cubs cucc cuce cuer cues curb cure curr curs cusb cuss cusu ebbc ebbr ebbs ebcc eber ebes ebru ebur ebus ecbc ecbe eccb eccc ecce eces ecrc ecrr ecru ecsc ecse ecss ecsu ecus eecs eeee eees eerc eers eese eeze erbb erbe ercc erce ereb erec erer eres erez errc erre errs erse erub eruc erur erus esbs escb esce escr escs escu esee eser eses esse essu esus eubc euer eur- eurc eure euse ezer ezuz rbbb rbbr rbbs rbss rcbc rccb rccc rccs rcsc rcss rebb rebe rebs rebu recc rece recr recs recu recz reeb rees rere rers reru rese ress reue reus reuu reze rezu rrrr rscc rscs rsee rsre rubb rube rubs rubu ruce ruer rues ruez rurc rure rurs ruru ruse russ rusu ruze sbbs sbcc sbcs sber sbse sbus sccc scce sccs scec scee scer scr- scrc scre scrs scsc scsr scsu scub scur se-c se-e se-s se-u se-z sebe sebs sec- secc sece secr secs secu seeb seec seer sees seeu seez serb serc sere serr sers seru sesc sese sess seur srbc srcc sreb srec sres srub srzu ssbr sscc ssce sscs ssec ssee sses ssrc ssrs sssb sssc ssss sub- subb subs subz suc- succ sucr sucs suee suer sues sueu suez sur- surc sure surr surs suru sus- suse suss susu susz suus suze suzu suzz szss szuc szur ubbe uber ucbc uces ucrc ucsb ucsc ucsu uers uess urbe urbs ure- ures urre urse urss ursu urur urus uruz usbc usbe usbr usbs uscc usce uscs usee user uses ussb ussc usse ussr usss ussu usus uuuu uzeb uzer zber zbus zebe zebu zees zeus zeze zrce zrze zsss zubr zubu zuce zurb zurr zuru zuzu zzzs zzzz

bbbee bbser bbsrc bbuss bcers be-er beber bebes becue beebe beebs beers beez berbe bercu berec beres berre berru berse berus berze besee besse beuer beure bezer bezes brebu brece breer brees brere brers brese bress breu- breze brrrr brsec bruce bruer brues bruse bruss bruzz bsure bubbe buber buces bucsu bucur bucze burbs burcu bures burrs burru burse bursz buruc burus buser buses busse bussu busur busuu buzzr c-bus cbers ccccc cebec ceber cebes cebus ceere ceese cerbu cerc- cerce cercs cerec cerer ceres cerre cerrs cerse cerss cerus cesce cescr cesse crebe crece creer crees cresc crese cress creu- creue crres cruce crure cruse cruze csere cubbe cubeb cuber cubes cubub cuers curbs curce curer cures curre currs curse cusec cuser cusse ebber ebers ebure ecrus ecser eeeee erbbe erber erebs erecs erere erres erses erubs esbus esces esere esser esses essse essue esure eucre eurre eurus euser rebbe rebec reber rebus recce recue recur recus reece reecs reere reese reeze rere- reree reres rerez resee reses resse resue resus reuer reuse reuss reuze rezes rubee ruber rubes rubus rucer ruere ruers rurec rusce ruses russe s-bus sccbc scere screc scree scrub scrue scrus scure scurr scuse scuzz sebbe sebes secre secur secus seebe seece seere seers seese seesu serbs serce serec serer seres serez serre serse serss serue sesce seser seses sesse sesue seuer seure seuss sezer sezze srbce srbec sssrb sssss subbu suber subss sucr- sucre suere suers suess sueur surer sures surre surur surus suser suses susse susus susuz suzue szucs u-cee uber- ubers ubrez urbes ursus