bbbb bbbs bbeb bbrg bebb bebe beeb beeg beek beer bees begg begs begu beke beks bere berg berk berr bers beru bes- bese besk bess beuk beur bggs breb bree breg brek brer bres brkb brrr brrs brsb brsr brue brug brus bseb bsee bseg bser bses bsgs bsse bubb bube bubs bubu buer bueu buge bugg bugs buke bukk buku bur- burb bure burg burk burr burs buru buse busk buss busu buus ebbr ebbs eber ebes ebru ebur ebus eeee eees eegs eeke eeks eerg eers eese eesk egbe egbu egee eger eggb egge eggs egks egre egss ekeb ekek eker ekes ekgs ekur erbb erbe ereb erer eres erg- ergg ergs erke erks erre errs erse erub erur erus esbs esee esek eser eses eske esks esku esse essg essu esus euer euge eur- eure euse gbbs gebe geek geer gees gege gegg gerb gere gers geru gesg gesk gess gesu geue gggg ggss grbr greb gree greg gres greu grrr grrs grss grub grue grug grur grus gskb gsse gsur gubb gubs gubu guer gues gugb guge gugg gugu gurb gure gurg gurk gurr gurs guru gusb guse guss guus kbbb kbbe kbbg kbbk kbbr kbbs kbbu kbeb kbee kbek kber kbes kbgb kbge kbgg kbgr kbkb kbkg kbkk kbkr kbrb kbre kbrg kbrk kbru kbsb kbsg kbsk kbsr kbss kbsu kbub kbue kbuk kbur kbus kbuu kebb kebe kebr kebu keek keer kees kege kegg kegk kegr kegs kekb keke keks keku ker- kerb kere kerk kerr kers keru kesb kesk kesr kess keug keur keus kgbb kgbr kgeb kggg kggr kgks kgrb kgre kgrg kgrk kgrr kgrs kgsr kgus kkbb kkbe kkbg kkbr kkbs kkeg kkgb kkgr kkkk kkrb kkre kkrk kkrr kkrs kkse kksr kkss kksu kkus kkuu krbb krbe krbg krbk krbr kreb kree krek kres kreu krgs krke krkk krkr krks krku krrb krre krrg krrk krrr krrs krse krsk krsr krss krsu krue krug kruk krur ksbr ksbs ksee kseg ksek kser ksgg ksgr ksgu kskb kske kskg kskk kskr ksks ksku ksrb ksrg ksrr ksrs ksse kssr ksss kssu ksub ksue ksug ksuu kubb kube kubr kubs kubu kuek kues kueu kugb kuge kugr kugs kuke kukk kuks kuku kurb kure kurk kurr kurs kuru kusb kusg kusu kuub kuuk kuur kuuu rbbb rbbr rbbs rbss rebb rebe rebk rebs rebu reeb reek rees rege regr regs regu reke reks rere rerg rers reru rese ress reue reuk reus reuu rgbe rkss rrrr rsee rsgb rsre rubb rube rubs rubu ruer rues ruge rugg rugs ruke rukk ruku rure rurs ruru ruse rusk russ rusu sbbs sber sbrk sbse sbus se-e se-g se-k se-s se-u sebe sebs seeb seeg seek seer sees seeu sege segg segs segu seke sekk seku serb sere serg serk serr sers seru sese sess seur sger sges sggg sggs sgss skee skeg sker skes skss skue skur sreb sres srgb srub ssbr ssee sses ssgs ssrg ssrs sssb ssss sub- subb subg subs suee suer sues sueu sug- suge sugg suke suks suku sur- sure surg surr surs suru sus- suse susk suss susu suus ubbe ubek uber uers uess uggs ugur uguu ukek ukes ukeu uksg ukur urbe urbs ure- ures urge urgu urke urre urse urss ursu uruk urur urus us-k usbe usbr usbs usee user uses uske ussb usse ussr usss ussu usus uuuu