bbbb bbbs bbeb bbrc bbrg bcbc bcbg bcbs bccc bccs bcec bcer bces bcgs bcrs bcru bcsc bcss bcuc bebb bebe beck becs becu beeb beeg beek beer bees begg begs begu beke beks berc bere berg berk berr bers beru bes- bese besk bess beuk beur bggs brcb brce breb brec bree breg brek brer bres brkb brrr brrs brsb brsr bruc brue brug brus bscs bseb bsec bsee bseg bser bses bsgs bssc bsse bubb bube bubs bubu bucc buce buck bucs bucu buer bueu buge bugg bugs buke bukk buku bur- burb bure burg burk burr burs buru busc buse busk buss busu buus cbbc cbbs cbcc cbce cbcr cbcs cbcu cbec cbee cber cbgb cbkg cbkr cbre cbsc cbse cbus ccbc cccb cccc cccs cccu ccee ccgc ccgs ccrc ccre ccrg ccrs ccsg ccss ccuc ccus cebs cebu cec- cece cecs ceeb ceec cees cege ceke cer- cerc cere cers cesc cese cesg cesr cess cgcc cgcg cger cges cggs cgsb cgss ckbc ckbe ckck ckcs cker ckrc cksb crbc crbu crcc crce crcr cre- creb crec cree creg cres creu crgs crkc crss crub crue crug cruk crus cscb cscc csce cscr cscs csec csee cser csks csrc csrs csse cssr csur csus cub- cubb cube cubs cucc cuce cuck cuek cuer cues cuk- cuke curb cure curr curs cusb cusg cusk cuss cusu ebbc ebbr ebbs ebcc eber ebes ebru ebur ebus ecbc ecbe eccb eccc ecce eces ecgs ecks ecrc ecrr ecru ecsc ecse ecss ecsu ecus eecs eeee eees eegs eeke eeks eerc eerg eers eese eesk egbe egbu egcc egcg egcr egec egee eger eggb egge eggs egks egre egsc egss ekeb ekek eker ekes ekgs ekur erbb erbe ercc erce ereb erec erer eres erg- ergg ergs erke erks errc erre errs erse erub eruc erur erus esbs escb esce escr escs escu esee esek eser eses eske esks esku esse essg essu esus eubc euer euge eur- eurc eure euse gbbs gc-c gcbc gccc gccs gcrg gcse gcss gcsu gebe gece geck geek geer gees gege gegg gerb gere gers geru gesg gesk gess gesu geue gggg ggss grbr grcc grce greb grec gree greg gres greu grrr grrs grss grub grue grug grur grus gskb gsse gsur gubb gubs gubu guck guer gues gugb guge gugg gugu gurb gure gurg gurk gurr gurs guru gusb guse guss guus kbbb kbbc kbbe kbbg kbbk kbbr kbbs kbbu kbcb kbce kbck kbcr kbcs kbcu kbeb kbec kbee kbek kber kbes kbgb kbge kbgg kbgr kbkb kbkg kbkk kbkr kbrb kbrc kbre kbrg kbrk kbru kbsb kbsg kbsk kbsr kbss kbsu kbub kbuc kbue kbuk kbur kbus kbuu kcbc kcbk kcbr kcbs kcbu kccb kccc kcck kccr kccu kceb kcec kcee kceg kceu kcgc kcgr kcgs kckc kckk kckr kcrc kcrg kcrr kcrs kcru kcsb kcsc kcse kcsg kcsr kcss kcsu kcub kcue kcuk kebb kebc kebe kebr kebu kecg keck kecr keek keer kees kege kegg kegk kegr kegs kekb kekc keke keks keku ker- kerb kerc kere kerk kerr kers keru kesb kesc kesk kesr kess keug keur keus kgbb kgbc kgbr kgcb kgcc kgce kgcr kgeb kgec kggg kggr kgks kgrb kgrc kgre kgrg kgrk kgrr kgrs kgsr kgus kkbb kkbe kkbg kkbr kkbs kkcb kkck kkcr kkcs kkeg kkgb kkgr kkkk kkrb kkrc kkre kkrk kkrr kkrs kkse kksr kkss kksu kkus kkuu krbb krbe krbg krbk krbr krcb krcc krce krcg krcs krcu kreb krec kree krek kres kreu krgs krkc krke krkk krkr krks krku krrb krrc krre krrg krrk krrr krrs krsc krse krsk krsr krss krsu kruc krue krug kruk krur ksbc ksbr ksbs kscb ksce ksck kscr kscs kscu ksec ksee kseg ksek kser ksgc ksgg ksgr ksgu kskb kske kskg kskk kskr ksks ksku ksrb ksrg ksrr ksrs ksse kssr ksss kssu ksub ksue ksug ksuu kubb kubc kube kubr kubs kubu kucb kucc kuce kucr kuek kues kueu kugb kuge kugr kugs kuke kukk kuks kuku kurb kure kurk kurr kurs kuru kusb kusc kusg kusu kuub kuuk kuur kuuu rbbb rbbr rbbs rbss rcbc rccb rccc rccs rcgc rcrg rcsc rcss rebb rebe rebk rebs rebu recc rece reck recr recs recu reeb reek rees rege regr regs regu reke reks rere rerg rers reru rese ress reue reuk reus reuu rgbe rkss rrrr rscc rscs rsee rsgb rsgc rsre rubb rube rubs rubu ruce ruck ruer rues ruge rugg rugs ruke rukk ruku rurc rure rurs ruru ruse rusk russ rusu sbbs sbcc sbcs sber sbrk sbse sbus sccc scce sccs scec scee sceg scer scgs sck- scr- scrc scre scrs scsc scsr scsu scub scug scur se-c se-e se-g se-k se-s se-u sebe sebs sec- secc sece secg seck secr secs secu seeb seec seeg seek seer sees seeu sege segg segs segu seke sekk seku serb serc sere serg serk serr sers seru sesc sese sess seur sgcb sgce sgcg sger sges sggg sggs sgss skee skeg sker skes skss skue skur srbc srcc sreb srec sres srgb srub ssbr sscc ssce sscs ssec ssee sses ssgs ssrc ssrg ssrs sssb sssc ssss sub- subb subg subs suc- succ suck sucr sucs suee suer sues sueu sug- suge sugg suke suks suku sur- surc sure surg surr surs suru sus- suse susk suss susu suus ubbe ubek uber ucbc uces ucrc ucsb ucsc ucsu uers uess ugcc ugcg uggs ugur uguu ukcc ukek ukes ukeu ukrc uksc uksg ukur urbe urbs ure- ures urge urgu urke urre urse urss ursu uruk urur urus us-k usbc usbe usbr usbs uscc usce uscg uscs usee user uses uske ussb ussc usse ussr usss ussu usus uuuu