struct S {
    v1: i32,
    v2: i32,
}

fn b<'a, 'b>(v1: &'a S, v2: &'b S) -> &'a S {
    println!("Here we go: {} {} {} {}", v1.v1, v1.v2, v2.v1, v2.v2);
    v1
}

fn a(v: &S) -> &S {
    let private_v = S{v1: 1, v2: 3};

    println!("I got {} {} and I have {} {} local", v.v1, v.v2, private_v.v1, private_v.v2);

    b(&v, &private_v)
}

fn main() {
    let my_v = S{v1: 2, v2: 4};
    let v1 = a(&my_v);

    println!("{} {} {} {}", my_v.v1, my_v.v2, v1.v1, v1.v2)
}