empty
18 16 14 12 10 8 6 4 2 0 
0 
19 17 15 13 11 9 7 5 3 1 0 
empty
18 18 16 16 14 14 12 12 10 10 8 8 6 6 4 4 2 2 0 0 
0 0 
19 19 17 17 15 15 13 13 11 11 9 9 7 7 5 5 3 3 1 1 0 0