System.exit(0xDEADBEEF);

const Readable = require('stream').Readable;
const util = require('util');
util.inherits(Programs, Readable);

function Programs(opt) {
    Readable.call(this, opt);
    this._i = 0;
}

Programs.prototype._read = function() {
    this.push((this._i++).toString(2).replace(/0/g, '*').replace(/1/g, ':'));
};

function sprint(stream) {
    process.stdout.write(stream.read(), function() { sprint(stream); });
}

sprint(new Programs());

1 (1) --> Falsy
2 (1,2) --> Falsy
3 (1,2,3) --> 1+2-3, Truthy
4 (1,2,3,4) --> -1+2+3-4, Truthy
5 (1,2,3,4,5) --> Falsy
6 (1,2,3,4,5,6) --> Falsy
7 (1,2,3,4,5,6,7) --> 1+2-3-4+5+6-7, Truthy