/* ---------------------------------------------------------------- */
//        System.out.println("\n\n");
        /* ---------------------------------------------------------------- */

//        System.out.println(dd.kever(dd));
//        System.out.println(dd.kever((FranciaDrazse) df));
//        System.out.println(df.kever(ff));

        /* ---------------------------------------------------------------- */
        System.out.println("\n\n");
        /* ---------------------------------------------------------------- */

//        System.out.println(((FranciaDrazse) df).kever(dd).kever(dd));
//        System.out.println(ff.kever(ff).kever(df));
/* ---------------------------------------------------------------- */
        System.out.println("\n\n");
        /* ---------------------------------------------------------------- */

        System.out.println(dd.kever((FranciaDrazse) df));
        //ystem.out.println(df.kever((FranciaDrazse) dd));
        System.out.println(df.kever(ff));

        /* ---------------------------------------------------------------- */
        System.out.println("\n\n");
        /* ---------------------------------------------------------------- */
        System.out.println(((FranciaDrazse) df).kever(dd));//.kever(ff));
        System.out.println(ff.kever(ff).kever(df));