bbbb bbeb bbpr bbrg bebb bebe beeb beef beeg beek beep beer befe beff begg begu beke bere berg berk berr beru beuk beur bfgf bfpp bkpg bkpr breb bree bref breg brek brep brer brfu brkb brrr brue brug brup bubb bube bubu buer bueu bufe buff bufr buge bugg buke bukk buku bur- burb bure burg burk burp burr buru ebbr eber ebru ebur eeee eefe eeke eerg ef-g efbr efgp efke egbe egbu egee eger egfp egfr eggb egge eggp egpb egpe egre ekeb ekek eker ekpe ekur epee eper eppp eprb eprp epub erbb erbe ereb erer erg- ergg erke erpe erre erub erur euer euge eur- eure f--k feeb feek feer fefe feff fege fegg feke ferb fere ferk ferr feru ffee ffff ffrr fkbp fprf free frep frub frue frug fubb fubu fuff fufu fuge fugu fuke fukk fuku fur- fure furg furr gebe geek geep geer gefe gege gegg gepe gerb gere geru geue geup gfer ggfg gggg gkrp gper gpgp gprp grbr greb gree gref greg grep greu grrr grub grue gruf grug grur gubb gubu guep guer guff gugb guge gugg gugu gurb gure gurg gurk gurr guru kbbb kbbe kbbf kbbg kbbk kbbr kbbu kbeb kbee kbef kbek kber kbfb kbff kbfk kbfp kbfr kbgb kbge kbgg kbgr kbkb kbkf kbkg kbkk kbkr kbpe kbpg kbpk kbpr kbpu kbrb kbre kbrf kbrg kbrk kbru kbub kbue kbuf kbuk kbup kbur kbuu kebb kebe kebr kebu keef keek keep keer kefb keff kefr kege kegg kegk kegr kekb keke keku kep- kepe kepu ker- kerb kere kerf kerk kerp kerr keru keug keup keur kfbk kfeb kfeg kfer kffb kfff kffg kffk kfge kfgr kfkb kfpr kfre kfrg kfrp kfrr kfru kgbb kgbr kgeb kgff kgfk kggf kggg kggr kgpe kgpf kgpg kgpr kgrb kgre kgrg kgrk kgrr kkbb kkbe kkbg kkbr kkeg kkfg kkfr kkgb kkgr kkkk kkpk kkrb kkre kkrf kkrk kkrr kkup kkuu kpbb kpbe kpbg kpbr kpek kper kpfk kpfr kpgb kpge kpgg kpgr kpke kpkk kpkr kppk kppp kppr kprb kpre kprf kprg kprk kprp kprr kpru kpub kpug kpur krbb krbe krbg krbk krbr kreb kree kref krek kreu krfe krff krfg krfp krke krkk krkr krku krpr krpu krrb krre krrf krrg krrk krrr krue kruf krug kruk krup krur kubb kube kubr kubu kuek kueu kuff kufr kugb kuge kugr kuke kukk kuku kupb kupe kupr kupu kurb kure kurk kurr kuru kuub kuuk kuur kuuu pbpk pbrf peek peep peer peff pegg pegu peke pekk pepe per- pere perf perg perk perp perr peru peur pfff pffr pfkp pger pgpu pgup pkge pper pppp pprf ppru ppur pre- preb pree pref preg prek prep preu prue pruf pruu pu-e pube pubu puer pueu puff pugu puke puku pupe pupu pur- purb pure purg purp purr puru rbbb rbbr rebb rebe rebk rebu reeb reef reek reep refe reff refg refr refu rege regr regu reke repe repp repr repu rere rerg reru reue reuf reuk reup reuu rfef rgbe rkkf rrrr rubb rube rubp rubu ruer rufe ruff ruge rugg ruke rukk ruku rupe rupp rure rurp ruru u-rp ubbe ubek uber ufer uffe ufpb ufuk ugep ugur uguu ukek ukeu ukup ukur upbe uppe uppp uppu upup urbe ure- urfe urff urge urgu urke urre uruk urup urur uuuu