bbbee be-er be-ro beber becco becov beebe beeve berbe berec berob beroe beror berre bevce bever bevor bo-bo boboc bobov bobr bobre bocce bocor boece boero booce booco booer boore borbo borce borec boree borer boro- boroo borov borre borro borve borvo bovec bovee brece breer breo- breoc brere breve brobo broce broer brrrr c-cor c-evo ccccc cebec ceber ceco- ceere ceoce ceoor cerc- cerce cerco cerec cerer cero- ceroc cerre cerro cervo co-bo co-co cobbe cobre cocc- cocce cocco coceo coeve cooee cooer coore corbe corbo corce core- coree corer coro- corre corve corvo coveo cover crebe crece creer creo- creve croce croco crooe crore crove cvrce ebber ecorv eeeee eevee eever eorre erbbe erber erere ereve eroor erore error evere evero everr eveve evocb evoor o-r-b obcov oboro obreb obrov ocoee ocr-b ocree oeco- oo-er oocre ooooo oovoo orbec oreco oreo- orere orero orobe orobo oroco oroer oveco over- overo r-co- rebbe rebec reber recce recco reece reere reeve rere- reree rerob revco rever ro-ro robbe robbo robec rober robo- robor rocco rocor rocov roero rooer roore roove rorer rover v-bob v-bor veber vebre vecer vecov veeco veere veeve verbo verco vereb verre verve vevce veveo vever voere voore vorbe vorce vorre vrbov