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