c-cor c-evo ccccc ceco- ceere cefor ceoce ceoor cerc- cerce cerco cerec cerer cero- ceroc cerre cerro cervo co-co cocc- cocce cocco coceo coeve cofer coffe cofre cooee cooer coore corce core- coree corer corfe corfo coro- corre corve corvo coveo cover crece creer creo- creve croce croco crooe crore crove cvrce ecoff ecorv eeeee eevee eever efere effer efore eofor eorre erere ereve eroor erore error eveof evere evero everr eveve evoor feeor feere fefor feoff ferce ferr- ferre ferro fever fevre focer foore force fore- foreo forro forvo freer frere frevo frore o-fer ocoee ocree oeco- ofeve offer offof offre oo-er oocre ooooo oovoo oreco oreo- orere orero orfeo orfoe orfor oroco oroer oveco over- overo r-co- recce recco reece reefe reere reeve refco refer reffe reffo rere- reree revco rever ro-ro rocco rocor rocov roero roffe rofor rooer roofe roore roove rorer rover vecer vecov veeco veere veeve verco verre verve vevce veveo vever voere voore vorce vorfe vorre