18-(     )-0=2

13-7-(     )=6

11-(     )-3=6

13-3-(     )=3

13-1-(     )=8

(     )-11-1=3

(     )-9-0=3

(     )-2-4=8

13-(     )-1=11

15-13-(     )=1

(     )-14-0=1

18-7-(     )=10

(     )-8-2=3

18-(     )-0=2

14-(     )-3=0

20-16-(     )=1

11-8-(     )=0

12-11-(     )=0

(     )-8-6=0

15-(     )-0=2

(     )-3-10=5

13-(     )-2=0

16-1-(     )=3

12-1-(     )=5

16-6-(     )=8

19-(     )-5=0

15-(     )-1=1

13-1-(     )=10

19-(     )-0=3

12-10-(     )=0

14-(     )-0=1

(     )-11-0=3

16-8-(     )=1

18-3-(     )=1

15-10-(     )=5

16-12-(     )=4

16-0-(     )=6

(     )-5-2=5

17-2-(     )=10

20-(     )-12=1

14-3-(     )=0

(     )-11-5=0

(     )-11-3=1

(     )-4-2=11

15-(     )-1=1

19-(     )-5=8

(     )-12-3=0

11-(     )-6=3

16-(     )-0=3

(     )-8-0=5