2 2 1
2

0 
1 0
1
1 0
1 0
0 
1.2 0 
1
2 0
1 0

0 
2 0
1
-1 0
1 0
0 
1.2 0
1 
-2 0
1 0

1
3 0
1 0
0
1.2 0
0 
1.1 0
1 
4 0
1 0