class AAA {
    public AAA() {
        int i = 10;
        message ("AAA creation method invoked");
    }
    construct {
        message ("AAA constructor invoked");
    }
}
class BBB: AAA {

    public int j {get; construct;}
    private int m;
    public BBB() {
        base();
        j = 100;
        message ("BBB creation method invoked");
    }
    construct {
        m = 0;
        message ("BBB constructor invoked");
    }
}

public int main(string[] args) {

    BBB b = new BBB();
    return 0;
}