player.onChat("3-10", function () {
    let height = 3;
    for (let i = 0; i < 3; i++) {
        for (let j = 0; j < 3; j++) {
            for (let k = 0; k < height; k++) {
                agent.place(FORWARD);
                agent.move(UP, 1);
            }
            agent.move(DOWN, height);
            agent.move(RIGHT, 1);
        }
        agent.move(LEFT, 3);
        agent.move(BACK, 1);
        height -= 1;
    }
});