c-p-c c-pop ccccc ceco- cemec cemex cemmo ceoce ceppo co-co co-op cocc- cocce cocco coceo cocom coepe comco comec comex comme commo comox compo cooee coome coope copce copec coppe coppo e-com eecom eeeee eepee emcee emeco empee epome excop execx exeem exeme exome exopc mccoo mcmxc meco- mecom mecop mecox meece meeco memex mempo mepco mmccc mmmcc mmmmm mocco mocoe moeme momme momoe mompe moope mopee moxee ocoee ocome oeco- oeppo omemo ooooo opepe p-com p-o-x pecco peece pemco pemex pepco pepee peppe pexec po-po pocop poeme pomme pompe poope poopo popco popex popop poppe poppo pppox x-com xexex xoxox xpcom