Karel the Dog Building Multiple Towers

//Karel will put 8 balls at each corner and continue.
public class RacingKarel extends SuperKarel
{
    public void run()
    {
        while (frontIsClear())
        {
            move();
        }
        while(frontIsBlocked())
        {
            for (int i=0; i < 8; i++)
            {
                putBall();
            }
            turnLeft();
        }

        while (frontIsClear())
        {
            move();
        }
        while(frontIsBlocked())
        {
            for (int i=0; i < 8; i++)
            {
                putBall();
            }
            turnLeft();
        }

        while (frontIsClear())
        {
            move();
        }
        while(frontIsBlocked())
        {
            for (int i=0; i < 8; i++)
            {
                putBall();
            }
            cactus();
        }

        while (frontIsClear())
        {
            move();
        }
        while(frontIsBlocked())
        {
            for (int i=0; i < 8; i++)
            {
                putBall();
            }
            potato();
        }
    }
    private void cactus()
    {
        turnLeft();
    }
    private void potato()
    {
        turnLeft();
    }
}