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