1 
Four: Two opposite the entrance, one to the left of the entrance, one to the right of the entrance. 

2 
Four: two to the left of the entrance, two to the right of the entrance. 

3 
Four: One opposite the entrance, one to the left of the entrance, one to the right of the entrance, one on the same side as the entrance. 

4 
Three: Two to the Right of the enterance, one opposite the entrance. 

5 
Three: Two to the left of the enterance, one opposite the entrance. 

6  7 
Three: One opposite the entrance, one to the left of the enterance, one to the right of the entrance. 

8  9 
Two: One to the left of the entrance, one to the right of the entrance. 

10  11 
Two: one opposite the entrance, one to the Right of the entrance. 

12  13 
Two: one opposite the entrance, one to the left of the enterance. 

14  15 
One: to the Right of the entrance. 

16  17 
One: to the left of the enterance 

18  20 
One: Opposite the entrance. 
