boolean beeperWorthySetting {
	//determine wether a beeper stack is to be processed
	boolean returnValue;
	turnLeft();
	move();
	if (rightIsClear()) returnValue = false;
	else returnValue = true;
	turnLeft();
	turnLeft();
	move();
	turnLeft();
	return returnValue;
}

void processStack {
	turnLeft();
	//take all beppers, and count them for later use
	int i;
	while nextToABeeper{
		pickBeeper();
		i++;
	}
	//walk along the wall until reaching the first cleared on the right spot
	while (!rightIsClear()) move();
	//drop all beepers but one
	for (i; i>1 ; i--) putBeeper();
	//return to main line and head east
	turnLeft();
	turnLeft();
	while (frontIsClear()) move();
	turnLeft();
}

void endSequence {
	//return to (1,1) and head East
	turnLeft();
	turnLeft();
	while (frontIsClear()) move();
	turnLeft();
	turnLeft();
	//drop l00t
	while (anyBeepersInBag()) putBeeper();
	//go to sleep
	turnOff();
}

main {
	//make sure that Karel is east-headed.
	while (!karel.facingEast()) karel.turnLeft( );
	//get Karel to move until the front is blocked, checking for a beeper on each step and invoking the proper sequence of methods
	while (karel.frontIsClear) {
		karel.move();
		if (karel.nextToABeeper()) {
			if (karel.beeperWorthySetting()) karel.processStack();
		}
	karel.endSequence();
}