class A:
    def first_method(self):
        print("Method of class A...")

class B:
    def first_method(self):
        print("Method of class B...")

class C(A,B):
    def first_method(self):
        print("Method of class C1...")
    def third_method(self):
        print("Method of class C2...")
        super().first_method()

        
if __name__=="__main__":
    ob=C()
    ob.third_method()
    
