0.0 0.0
4.0 0.0
6.0 0.0
10.0 0.0
12.0 0.0
18.0 0.0
20.0 0.0
0.0 2.0
4.0 2.0
6.0 2.0
10.0 2.0
12.0 2.0
18.0 2.0
20.0 2.0
0.0 10.0
4.0 10.0
6.0 10.0
10.0 10.0
12.0 10.0
18.0 10.0
20.0 10.0
0.0 12.0
4.0 12.0
6.0 12.0
10.0 12.0
12.0 12.0
18.0 12.0
20.0 12.0