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Dyscalc
2 + 5
5 + 2
1 + 6
1 + 2
3 + 4
7 + 2
8 + 1
2 + 1
1 + 2
1 + 6
4 + 5
2 + 5
6 + 1
4 + 3
3 + 4
2 + 1
3
7
9
verification off
reset
options