__ + 1 = 10

7 + __ = 11

__ + 7 = 10

7 + __ = 16

__ + 2 = 11

__ + 9 = 14

__ + 7 = 12

9 + __ = 14

4 + __ = 11

__ + 5 = 11

3 + __ = 10

17 + __ = 20

1 + __ = 10

__ + 9 = 15

__ + 5 = 12

__ + 8 = 11

9 + __ = 20

__ + 3 = 11

__ + 9 = 16

__ + 6 = 13

8 + __ = 11

__ + 4 = 12

__ + 12 = 20

6 + __ = 15

__ + 9 = 13

__ + 19 = 20

__ + 8 = 15

__ + 7 = 13

__ + 8 = 17

8 + __ = 20

7 + __ = 15

__ + 11 = 20

5 + __ = 13

9 + __ = 12

__ + 7 = 15

__ + 6 = 12

7 + __ = 10

__ + 5 = 14

2 + __ = 20

__ + 4 = 10

5 + __ = 11

4 + __ = 13

15 + __ = 20

7 + __ = 12

8 + __ = 10

__ + 3 = 20

9 + __ = 17

19 + __ = 20

6 + __ = 10

14 + __ = 20

__ + 8 = 20

__ + 17 = 20

__ + 7 = 16

3 + __ = 12

__ + 6 = 10

__ + 1 = 20