13-11=

19-10=

15-0=

17-4=

20-19=

14-12=

15-9=

18-4=

20-0=

14-5=

17-6=

17-8=

15-4=

12-9=

11-8=

15-2=

13-9=

13-7=

12-9=

18-17=

16-1=

20-4=

13-9=

19-18=

18-8=

20-4=

18-15=

12-0=

15-8=

15-7=

13-0=

13-11=

16-13=

14-13=

19-19=

14-6=

13-9=

18-10=

18-12=

15-12=

15-10=

19-11=

13-10=

11-1=

12-11=

17-7=

20-10=

14-6=

14-7=

13-12=