| Value | Category | Cases | |
|---|---|---|---|
| a | 135 |
67.5%
|
|
| ab | 31 |
15.5%
|
|
| abd | 1 |
0.5%
|
|
| ad | 4 |
2%
|
|
| b | 21 |
10.5%
|
|
| c | 2 |
1%
|
|
| d | 6 |
3%
|