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