12-8=
20-2=
19-11=
17-0=
17-8=
20-15=
19-11=
2+8=
15-13=
11-0=
12-1=
17-11=
8+5=
2+13=
17-14=
15-8=
15+3=
10-0=
18-10=
14+6=
9+8=
8-0=
12-5=
3+4=
19+0=
11+0=
20-20=
8+7=
20-11=
20-9=
2+15=
6-1=
4-2=
13+2=
5-1=
11+0=
13+7=
15-14=
11-7=
10-1=
18-6=
18+2=
11-3=
8-7=
12-1=
16+0=
14-11=
15+2=
19-2=
13-6=
16-7=
6+2=
1+12=
8-5=
17-6=
4+16=
14+4=
4+4=
3+5=
16-15=
0+11=
16-8=
13-1=
17-3=
19-2=
14-7=
17-1=
3+12=
13-1=
4+3=
19-18=
5+9=
10-3=
8+4=
9-8=
10-7=
1+18=
10+6=
17-17=
16-14=
3+4=
8+2=
5-3=
9+5=
10+3=
11+9=
16-9=
19-7=
1+5=
12-4=
8+2=
18-1=
6+2=
14+4=
11+7=
11-10=
16-4=
11-4=
1+18=
7+4=
