Score 25
Range   || Letter || Demerit Max
22-25         A         -2
19-22         B         -6
15-18         C         -10
11-15         D         -13
10-11         E         -15
Score 20
Range   || Letter || Demerit Max
18-20         A         -2
15-18         B         -5
12-15         C         -8
 9-12         D         -11
 8- 9         E         -12
Score 15
Range   || Letter || Demerit Max
14-15         A         -1
11-13         B         -3
 9-11         C         -6
 7- 9         D         -8
 6- 7         E         -9
Score 10
Range   || Letter || Demerit Max
 9-10         A         -1
 8- 9         B         -2
 6- 7         C         -4
 4- 6         D         -5
 4- 4         E         -6