 2 
 1 
 0 
 3 
  2 
 1 
 2 


 2 
 1 
 0 
 3 
  2 
 1 
 2 


 2 
 1 
 0 
 3 
  2 
 1 
 2 


 2 
 1 
 0 
 3 
  2 
 1 
 2 
