class A {}

class B<T> {}

class C<X, Y> {}

class D<X extends num> {}

typedef F = A;
typedef G0 = B;
typedef G1 = B<int>;
typedef G2<T> = B<T>;
typedef G3<T extends num> = B<T>;
typedef H0 = C;
typedef H1 = C<int, String>;
typedef H2<T> = C<int, T>;
typedef H3<T, S> = C<T, S>;
typedef H4<T, S> = C<S, T>;
typedef H5<T extends num, S> = C<T, S>;
typedef H6<T, S extends num> = C<T, S>;
typedef I0 = D;
typedef I1 = D<num>;
typedef I2<T extends num> = D<T>;
typedef I3<T extends int> = D<T>;
main() {}