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