Tiers: 4
Stacks: 7
Containers: 22
Stack 0: 13   7    
Stack 1: 18   15   5    6    
Stack 2: 17   14   20   
Stack 3: 9    4    19   21   
Stack 4: 10   11   8    2    
Stack 5: 16   
Stack 6: 1    3    0    12