b-r-k bbbee bbook be-er be-ro bebek beber bebog beebe beeke begee begge begob begor begue begur beker bekke bekko bekok beour berbe bereg berek berge berk- berke berko berob beroe berok beror berre berru beuer beure bo-bo bobek bobko bobok bobr bobre boege boeke boero boeur boger bogge bogoe bogor bogu bogue bogur bokeo boker bokko bokok bokor booer booke booko boore booru borbo boree borek borer borge borgo borgu borko borku boro- borok boroo borou borre borro bouee bouer bouge bouke bouko boure bourg brebu breek breer breg- brege bregg breke breo- brere breu- brobo broek broer broke brook broue brouk brrrr bruer bruge brugg bruke bubbe buber buger bugge bugok bugoo bugre buker bukk- bukor burek burge burgk burgo burgu burke buroo burro burru buruk ebber ebeko eberg ebook eboue ebure eeeee egger egrek ekeko ekker ekuku ekuru eorre erbbe erber erege erere ergo- erkko eroge eroor erore error erugo eruke eubro euro- eurre gbeke gbeko gberg gberu gboko geber gebke gebre gebur geebo geere gegge gekko georg gerbe gerbo gerke gerok gerre go-go go-oo gobbe gobbo gobeo goeke gogok gogro gogue goobo googe goore gorbe goree gorer gorge gorgo gorre gouge goure grebe grebo greek greer grege gregg grego grgur groge grogg grokk grook groue grrrr grubb grube grure gubbe gubbo guber gubru guere guero gukgo guoge gurge gurke gurko guroo gurre gurro gurur k-gee k-rob kebbe kebek keber kebob keego keere kerek kergu kerre ko-ko kobee kober kobru kobuk koege koeru kogge kogoe kogro koker kokko kokor kokou kokre kokur koogu kooru korbe korbo korek korgu korke korku koror korro korue koruk kouer koure kre-o kreek kreke kreo- kreuk kroge kroke kruge kubek kuber kubok kugur kukko kukok kukur kurbu kurek kurgo kurku kurre kuruk o-r-b obegu oberg oboro oboue obreb obrok ogogo ogugu okeke okere okker okkur okobo okoge okoro okreg okrog okrug okubo okuku okuru oo-er ooooo oreo- orere orero orgue orobe orobo oroer oroke orrgo orube oruku oruro ouoro oure- rebbe rebeg reber reege reere reger regge reggo regur rekke reorg rere- reree rerob reuer ro-ro robbe robbo rober robo- robor robur roero roger rogge rogue rokee roker rokke rokkk rooer rooge rooke roore rooue rorbu rorer rorke rouer rouge rouke rouko roure rubee ruber rubke rubor ruegg ruere ruger rugge rukke uber- ubobo ugro- ugrug ukeke ukobu ukuug uouee ureo- urger urker uroob urour urubu uuork uuuuu