c-cor c-evo ccccc ceco- ceere cekov ceoce ceoor cerc- cerce cerco cerec cerer cerke cero- ceroc cerou cerre cerro cervo co-co cocc- cocce cocco coceo cocke cocur coeur coeve coker cokk- cooee cooer cooke coore corce core- coree corer coreu corke coro- corre corve corvo couco couer coure couru couve covek coveo cover crece creek creer creke creo- creu- creue creve croce crock croco croke crooe crook crore crouk crove cruce cruck cruke cruor crure cruve cucuk cuero cuevo cuker cukor cuoco cuore curce curer curre curro curve cuvee cvrce ecker ecorv eecke eeeee eevee eever ekeko ekker ekuku ekuru eorre erere ereve erkec erkko erkoc eroor erore error eruke eucre euro- eurre eveck evere evero everr eveve evoke evoor evour kecer keere keeve kekec kerek kerre kerve kever ko-ko kocek kocer kocke kocov koeru koker kokko kokor kokou kokre kokur kooru korck korec korek korke korku koror korro korue koruk korve kouer koure kovor kovur kre-o kreek kreke kreo- kreuk krock kroke kucer kucuk kukec kukko kukok kukur kurek kurku kurov kurre kuruc kuruk occur ocker ockro ocoee ocree oeco- okeke okere okker okkur okoc okoro okuku okuru oo-er oocre ooooo oovoo oreck oreco oreo- orere orero oroco oroer oroke oruce oruku oruro ouoro ource oure- ouver ouvre oveco over- overo r-co- recce recco recke recue recur reece reere reeve rekke rere- reree reuer revco rever revue ro-ro rocco rocke rocko rocor rocou rocov roero rokee roker rokke rokkk rooer rooke roore rooue roove rorer rorke rouer rouke rouko roure rover rucer ruere rukke rurec u-cee uceku ucero ukeke uouee ureo- urker urour uruce urucu uuork uuuuu uvrou vecer vecke vecov veeck veeco veere veeve vekke vekre verco verek verke verre verve veuve vevce veveo vever voere vokee vokov voore vooru vorce vorke vorre voure vrock vucko vuere vuver