17-11=

14-8=

11-5=

12-8=

16-8=

14-1=

12-0=

20-2=

11-11=

11-6=

13-10=

15-10=

14-8=

18-4=

11-9=

16-6=

12-10=

19-3=

14-11=

13-6=

15-12=

14-9=

12-7=

17-6=

19-15=

20-3=

12-9=

13-10=

13-8=

19-19=

13-4=

19-2=

20-16=

15-9=

18-4=

13-9=

11-7=

20-16=

13-8=

20-12=

20-13=

19-10=

20-16=

15-0=

18-13=

14-0=

12-7=

20-10=

12-5=

13-5=