2000.
0.
0.
0.
2000.
0.
0.
0.
0.
0.
0.
0.
0.
1000.
0.
0.
0.
1000.
0.
-1000.
0.
1000.
0.
0.
0.
0.
0.
0.
0.
0.
1000.
-1000.
0.
-1000.