chloroformisation, choisirions, choisissions, chosification, chronométrions, chuchotions, ciblons, cicatrisation, cigalon, cinglions, cinglons, circoncision, circoncisions, circonlocutions, circonscription, circonscriptions, circonspection, circonspections, circonvallation, circonvallations, circonvolution, circonvolutions, circulation, circulations, circulions, circulons, circumnavigation, cirions, ciselions, citation, citations, citions, civilisation, civilisations, claironnions, clamions, claquions, clarification, clarifions, classification, classifications, claudication, claustration, clayon, clayons, climatisation, clochardisation, clouions, co-production, co-productions, coagulation, coalition, coalitions, coction, codification, coercition, cogitation, cogitations, cognition, cohabitation, cohabitations, cohésion, collaboration, collaborations, collaborions, collation, collations, collection, collectionnions, collections, collectivisation, collimation, collions, collision, collisions, collodion, collons, collusion, collusions, colocation, colon, colonisation, colonisations, colons, coloration, colorations, colorisation, combattions, comblons, combustion, combustions, commandions, commencerions, commencions, commentions, commercialisation, commettions, commission, commissions, commisération...