namespace in;

const u8 in = 1;
interface in {}
class in {
    public const u8 in = 1;

    public function in(): void {}
}

function in(): in {
    $in = in;
    $in = new in();
    $in = in::in;
    $in = in::in();
    $in = in::in::in;
    $in = in::in::in();
    $in = $in->in();

    $in
}

function in(): in {
    in
}