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