6 +3 -1
8
1+3
4
8-4
4
3+5
8
6-3
3
8-4
4
6+3
9
5+2
7
4+2
6
5-3
2
8+2
10
10-3
7
8+1
9
5+3-7
1
5-1
4
5-5
0
6-3
3