player.onChat("3-7", function () {
    let height = 2;
    let length = 2;
    for (let i = 0; i < 3; i++) {
        for (let j = 0; j < height; j++) {
            agent.place(FORWARD);
            agent.move(UP, 1);
        }
        agent.move(DOWN, height);
        agent.move(RIGHT, length);
        height = height + 1;
        length = length + 1;
    }
});