Within Karas world there exist forests with circuit tours in which Kara wants to go search for a cloverleaf. Most of the fields in a circuit tour have exactly two empty neighboring fields. A few of the fields, however, are blocked by mushrooms, but there are enough empty squares behind the mushroom so that Kara can push aside all mushrooms. Also, there is no such situation that the ladybug has a mushroom at one of its sides and an empty square on its other side (since there is no sensor to detect mushrooms to the left or right of the ladybug).
Program Kara so that it finds the cloverleaf. When the ladybug finds the leaf, it should eat it, and stop.
This Kara problem was contributed by Zhang Hui, National University of Singapore.