0 0 10 10
22
3.5 8
6.5 8
0 5
5 0
6 7
8 3
9 3
1 1
4 1
9 1
2 2
2 4
5 7
5 7 
6 9
8 6
4 9 
5 9
6 1
5 1
5.5 0.5
6.5 0.5
