20-(     )=8

11-(     )=0

16-(     )=5

12-(     )=1

14-(     )=12

13-(     )=3

19-(     )=14

12-(     )=0

18-(     )=2

11-(     )=1

19-(     )=13

11-(     )=6

13-(     )=0

17-(     )=8

14-(     )=10

18-(     )=1

18-(     )=9

11-(     )=6

17-(     )=16

14-(     )=8

14-(     )=14

18-(     )=14

17-(     )=2

19-(     )=14

13-(     )=2

12-(     )=8

20-(     )=19

19-(     )=14

18-(     )=7

14-(     )=14

12-(     )=2

11-(     )=4

18-(     )=4

16-(     )=2

16-(     )=6

14-(     )=10

16-(     )=8

20-(     )=2

19-(     )=7

15-(     )=14

14-(     )=13

11-(     )=3

20-(     )=2

15-(     )=12

11-(     )=9

18-(     )=12

17-(     )=1

11-(     )=1

16-(     )=7

20-(     )=14