//http://stanfordkarel.com/lessons.html#/english/unit9/lesson2
//Partial solution

//Karel must help rebuild
//broken columns. Make a
//column of beepers above
//each beeper you find on
//the first row
function main() {
   while(frontIsClear()){
      move();
      if (beepersPresent())
      {
         turnLeft();
         move();
         while (noBeepersPresent())
         {
            putBeeper();
            move();
         }
      }
   }
}