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