-1
1
-2
-2
1
1
-1
-1
-3
2
1
2
-2
-2
-2
1
1
-1
1
-2
2
1
1
-1
-1
1
-2
-1
-2
1
-2
-2
1
-3
1
1
-2
-2
1
1
1
-2
1
-2
-2
-2
1
-1
-3
-2
