17-(     )=14

14-(     )=11

19-(     )=11

14-(     )=6

17-(     )=3

14-(     )=3

11-(     )=0

20-(     )=7

12-(     )=2

16-(     )=10

14-(     )=2

11-(     )=6

16-(     )=10

13-(     )=7

12-(     )=0

17-(     )=6

15-(     )=0

20-(     )=9

20-(     )=20

12-(     )=4

15-(     )=9

17-(     )=11

16-(     )=4

18-(     )=18

14-(     )=12

20-(     )=13

14-(     )=6

18-(     )=12

11-(     )=1

16-(     )=6

19-(     )=8

12-(     )=3

16-(     )=12

12-(     )=9

16-(     )=3

13-(     )=13

13-(     )=13

20-(     )=18

17-(     )=16

18-(     )=10

18-(     )=10

16-(     )=0

14-(     )=10

20-(     )=11

20-(     )=3

11-(     )=7

11-(     )=7

14-(     )=5

20-(     )=16

12-(     )=7