bbbee bbqer be-er be-ro beber becco becue beebe beour beque berbe bercu berec berob beroe beror berre berru beuer beure bo-bo boboc bobr bobre bocce bocor boece boero boeur booce booco booer boore booru borbo borce borec boree borer boro- boroo borou borre borro bouce boucq bouee bouer boure brebu brece breer breo- breoc brere breu- brobo broce broer broue brrrr bruce bruer bubbe buber bucco buceo bucur burcu buroo burro burru buruc buruq c-cor ccccc cebec ceber ceco- ceere ceoce ceoor cerbu cerc- cerce cerco cerec cerer cero- ceroc cerou cerre cerro co-bo co-co cobbe cobre cobue cocc- cocce cocco coceo cocur coeur cooee cooer coore coque coquo corbe corbo corbu corce core- coree corer coreu coro- corre couco couer courb coure couru crebe crece creer creo- creu- creue croce croco crocq crooe crore cruce crucq cruor crure cubbe cubeb cuber cubo- cubub cuero cuoco cuore curce curer curre curro ebber eboue ebure eeeee eorre erbbe erber erere eroor erore error eubro eucre euro- eurre o-r-b oboro oboue obreb occur ocoee ocr-b ocree oeco- oo-er oocre ooooo orbec oreco oreo- orere orero orobe orobo oroco oroer orque orube oruce oruro ouoro ource ourcq oure- qorcu qoroq qoruq quebo queeb queer queor quere quero queue quobb quore qureq quruq r-co- rebbe rebec reber recce recco recue recur reece reere reque rere- reree rerob reuer ro-ro robbe robbo robec rober robo- robor robur rocco rocor rocou roero rooer roore rooue roque rorbu rorer rouer roure rubee ruber rubor rucer rucuq ruere rurec u-cee uber- ubobo ucero uouee uqcrb uqcrq ureo- uroob urour urubu uruce urucu uuuuu