============================================================
Score 10                      |  Score 20                 
Range | Letter and Demerits   |  Range | Letter and Demerits
10-10   A  = -0,              |  19-20   A  = -0,
 9- 9   A- = -1,              |  18-19   A- = -1,
 8- 9   B+ = -1,              |  17-18   B+ = -2,
 8- 8   B  = -2,              |  16-17   B  = -3,
 8- 8   B- = -2,              |  15-16   B- = -4,
 7- 7   C+ = -3,              |  14-15   C+ = -5,
 6- 7   C  = -3,              |  13-14   C  = -6,
 6- 6   C- = -4,              |  12-13   C- = -7,
 5- 6   D+ = -4,              |  11-12   D+ = -8,
 5- 5   D  = -5,              |  10-11   D  = -9,
 4- 5   D- = -5,              |   9-10   D- = -10,
 4- 4   E  = -6,              |   8- 9   E  = -11,
============================================================
|  Score 30                     | Score 40               
|  Range | Letter and Demerits  | Range | Letter and Demerits
|  28-30   A  = -0, -1,         | 38-40   A  = -0, -1,
|  27-28   A- = -2, -3,         | 36-38   A- = -2, -3,
|  26-27   B+ = -4,             | 34-36   B+ = -4, -5,
|  24-25   B  = -5, -6,         | 32-34   B  = -6, -7,
|  22-24   B- = -7,             | 30-32   B- = -8, -9,
|  21-22   C+ = -8,             | 28-30   C+ = -10, -11,
|  20-21   C  = -9, -10, -11,   | 26-28   C  = -12, -13,
|  18-19   C- = -12,            | 24-26   C- = -14, -15,
|  16-18   D+ = -13,            | 22-24   D+ = -16, -17,
|  15-16   D  = -14, -15,       | 20-22   D  = -18, -19,
|  14-15   D- = -16,            | 18-20   D- = -20, -21,
|  12-13   E  = -17, -18,       | 16-18   E  = -22, -23,
====================================================================
Score 60                      |Score 100
Range | Letter and Demerits   |Range | Letter and Demerits           
57-60   A  = -0, -1, -2, -3,  |95-100  A  = -0, -1, -2, -3, -4, -5,  
54-56   A- = -4, -5, -6,      |90-94   A- = -6, -7, -8, -9, -10,     
51-53   B+ = -7, -8, -9,      |85-89   B+ = -11, -12, -13, -14, -15, 
48-50   B  = -10, -11, -12,   |80-84   B  = -16, -17, -18, -19, -20, 
45-47   B- = -13, -14, -15,   |75-79   B- = -21, -22, -23, -24, -25, 
42-44   C+ = -16, -17, -18,   |70-74   C+ = -26, -27, -28, -29, -30, 
39-41   C  = -19, -20, -21,   |65-69   C  = -31, -32, -33, -34, -35, 
36-38   C- = -22, -23, -24,   |60-64   C- = -36, -37, -38, -39, -40, 
32-35   D+ = -25, -26, -27,   |54-59   D+ = -41, -42, -43, -44, -45, 
30-32   D  = -28, -29, -30,   |50-54   D  = -46, -47, -48, -49, -50, 
27-29   D- = -31, -32, -33,   |45-49   D- = -51, -52, -53, -54, -55, 
24-26   E  = -34, -35, -36,   |40-44   E  = -56, -57, -58, -59, -60, 
====================================================================