class program {

define turnright () {
    iterate(3) {
        turnleft();
    }
}

program() {
    while (notNextToABeeper) {
        putbeeper();
        if (frontIsClear) {
            move();
        }
        turnright();
        if (frontIsClear) {
            move();
        }
        turnleft();
        if (frontIsBlocked) {
            turnleft();
        }
    }
    turnoff();
}

}