0 1
-4 1
4 1
0 1
0 1
0 1
0 1
1 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
2 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
1 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
