c-cor ccccc ceco- ceere ceoce ceoor cerc- cerce cerco cerec cerer cerke cero- ceroc cerou cerre cerro co-co cocc- cocce cocco coceo cocke cocur coeur coker cokk- cooee cooer cooke coore corce core- coree corer coreu corke coro- corre couco couer coure couru crece creek creer creke creo- creu- creue croce crock croco croke crooe crook crore crouk cruce cruck cruke cruor crure cucuk cuero cuker cukor cuoco cuore curce curer curre curro ecker eecke eeeee ekeko ekker ekuku ekuru eorre erere erkec erkko erkoc eroor erore error eruke eucre euro- eurre kecer keere kekec kerek kerre ko-ko kocek kocer kocke koeru koker kokko kokor kokou kokre kokur kooru korck korec korek korke korku koror korro korue koruk kouer koure kre-o kreek kreke kreo- kreuk krock kroke kucer kucuk kukec kukko kukok kukur kurek kurku kurre kuruc kuruk occur ocker ockro ocoee ocree oeco- okeke okere okker okkur okoc okoro okuku okuru oo-er oocre ooooo oreck oreco oreo- orere orero oroco oroer oroke oruce oruku oruro ouoro ource oure- r-co- recce recco recke recue recur reece reere rekke rere- reree reuer ro-ro rocco rocke rocko rocor rocou roero rokee roker rokke rokkk rooer rooke roore rooue rorer rorke rouer rouke rouko roure rucer ruere rukke rurec u-cee uceku ucero ukeke uouee ureo- urker urour uruce urucu uuork uuuuu