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