__ + 9 = 14

10 + __ = 18

12 + __ = 19

__ + 2 = 9

__ + 12 = 14

__ + 13 = 15

__ + 8 = 11

5 + __ = 6

18 + __ = 19

6 + __ = 20

9 + __ = 16

5 + __ = 16

3 + __ = 20

10 + __ = 12

10 + __ = 17

2 + __ = 5

1 + __ = 14

4 + __ = 20

__ + 15 = 16

11 + __ = 15

__ + 9 = 11

1 + __ = 8

1 + __ = 16

__ + 3 = 14

__ + 6 = 10

7 + __ = 15

__ + 10 = 12

__ + 7 = 12

__ + 4 = 16

__ + 8 = 17

__ + 9 = 16

__ + 7 = 15

7 + __ = 9

1 + __ = 11

5 + __ = 12

__ + 12 = 16

__ + 3 = 4

__ + 4 = 6

2 + __ = 12

1 + __ = 20

13 + __ = 14

__ + 4 = 18

5 + __ = 13

__ + 14 = 16

1 + __ = 15

__ + 7 = 20

__ + 4 = 11

__ + 7 = 17

15 + __ = 16

__ + 7 = 14

10 + __ = 14

4 + __ = 12

__ + 11 = 19

3 + __ = 5

__ + 3 = 15

11 + __ = 14