b-r-k bbbee bbook bcock be-er be-ro bebek beber becco becke becue beebe beeke beker bekke bekko bekok beour berbe berck bercu berec berek berk- berke berko berob beroe berok beror berre berru beuer beure bo-bo bobek bobko boboc bobok bobr bobre bocce bocke bocor boece boeck boeke boero boeur bokeo boker bokko bokok bokor booce boock booco booer booke booko boore booru borbo borce borck borec boree borek borer borko borku boro- borok boroo borou borre borro bouce bouck bouee bouer bouke bouko boure brcko brebu brece breck breek breer breke breo- breoc brere breu- brobo broce brock broek broer broke brook broue brouk brrrr bruce bruck bruer bruke bubbe buber bucco bucek buceo bucko bucku bucur buker bukk- bukor burck burcu burek burke buroo burro burru buruc buruk c-cor ccccc cebec ceber ceco- ceere ceoce ceoor cerbu cerc- cerce cerco cerec cerer cerke cero- ceroc cerou cerre cerro co-bo co-co cobbe cobre cobue cocc- cocce cocco coceo cocke cocur coeur coker cokk- cooee cooer cooke coore corbe corbo corbu corce core- coree corer coreu corke coro- corre couco couer courb coure couru crebe crece creek creer creke creo- creu- creue croce crock croco croke crooe crook crore crouk cruce cruck cruke cruor crure cubbe cubeb cuber cubo- cubub cucuk cuero cuker cukor cuoco cuore curce curer curre curro ebber ebeko ebook eboue ebure ecker eecke eeeee ekeko ekker ekuku ekuru eorre erbbe erber erere erkec erkko erkoc eroor erore error eruke eubro eucre euro- eurre k-rob kebbe kebek keber kebob kecer keere kekec kerek kerre ko-ko kobee kober kobru kobuk kocek kocer kocke koeru koker kokko kokor kokou kokre kokur kooru korbe korbo korck korec korek korke korku koror korro korue koruk kouer koure kre-o kreek kreke kreo- kreuk krock kroke kubek kuber kubok kucer kucuk kukec kukko kukok kukur kurbu kurek kurku kurre kuruc kuruk o-r-b obock oboro oboue obreb obrok occur ocker ockro ocoee ocr-b ocree oeco- okeke okere okker okkur okobo okoc okoro okubo okuku okuru oo-er oocre ooooo orbec oreck oreco oreo- orere orero orobe orobo oroco oroer oroke orube oruce oruku oruro ouoro ource oure- r-co- rebbe rebec reber recce recco recke recue recur reece reere rekke rere- reree rerob reuer ro-ro robbe robbo robec rober robo- robor robur rocco rocke rocko rocor rocou roero rokee roker rokke rokkk rooer rooke roore rooue rorbu rorer rorke rouer rouke rouko roure rubee ruber rubke rubor rucer ruere rukke rurec u-cee uber- ubobo uceku ucero ukeke ukobu uouee ureo- urker uroob urour urubu uruce urucu uuork uuuuu