sentences:  The WBC has nine regional governing bodies affiliated with it, such as the North American Boxing Federation (NABF), the Oriental and Pacific Boxing Federation (OPBF), the EBU and the African Boxing Council (ABC).Although rivals, the WBC's relationship with other sanctioning bodies has improved over time and there have even been talks of unification with the WBA.Unification bouts between WBC and other organizations' champions are becoming more common in recent years.