2+8= 2+9= 1+9= 3+7= 3+8= 3+9=
4+6= 4+7= 4+8= 4+9= 5+5= 5+6=
5+7= 5+8= 5+9= 6+4= 6+5= 6+6=
6+7= 6+8= 7+6= 7+7= 8+4= 8+5= 8+9= 9+1= 9+5= 9+6= 11-3= 11-4= 11-9= 12-3= 12-8= 12-9= 13-9= 14-5= 15-6= 15-7= 13-8= 16-9= 6+9= 7+8= 8+6= 9+2= 9+7= 11-5= 12-4= 13-4= 14-6= 15-8=
7+3= 7+9= 8+7= 9+3= 9+8= 11-6= 12-5= 13-5= 14-7= 7+4= 8+2= 8+7= 9+4= 9+9= 11-7= 12-6= 13-6= 14-8= 7+5=
8+3=
8+8=
9+5=
11-2=
11-8=
12-7=
13-7=
14-9=
17-9= 15-9= 16-7= 16-8= 18-9= 17-8=