| Value | Category | Cases | |
|---|---|---|---|
| a | 55 |
2.9%
|
|
| ab | 10 |
0.5%
|
|
| abc | 20 |
1.1%
|
|
| ac | 10 |
0.5%
|
|
| ad | 21 |
1.1%
|
|
| bc | 10 |
0.5%
|
|
| c | 990 |
52.2%
|
|
| cd | 196 |
10.3%
|
|
| d | 583 |
30.8%
|